氰根和草酸根桥联多金属配合物的磁性研究
|
摘要
分子磁性材料的设计和合成涉及到物理学,化学,生物学,以及材料学等关键领域。所谓分子磁体是指用分子型自旋载体(自由基或顺磁离子)在溶液中合成出具有磁铁一样性质的、在临界温度(Tc)下具有自发磁化的分子性化合物。获得分子磁体最常用的方法就是通过选择合适的配体及桥联基团磁性离子来形成配合物,通过改变桥联基团,配体或不同的磁性离子来设计分子基磁体,从而改变配合物的结构,控制其磁性。配合物的磁性不仅与磁性离子的磁性有关,而且与桥联配体的性质有很大的关系。氰根桥联和草酸根桥联配合物由于其独特的结构和优异的磁学性质而在该领域占有尤为重要的地位。本文采用磁性测量和结构测试等相结合研究金属配合物分子磁体的磁性质﹑微观结构和磁耦合相互作用机理等。在NBu4ZnII0.03FeII0.97[FeIII(ox)3]中发现补偿温度,并从定性角度上对其进行了合理的证实。本论文得到的研究成果如下:
1.溶液共沉淀法合成了多金属普鲁士蓝类化合物Ni0.75Cu0.75[Fe(CN)6]·6.3H2O。研究结果表明化合物为铁磁性磁体,顺磁向铁磁转变温度是21.77K,配合物的顺磁居里温度θ、剩余磁化强度Mr、矫顽场Hc不同于纯粹的双金属普鲁士蓝类化合物Ni3[Fe(CN)6]2·xH2O、Cu3[Fe(CN )6 ]2·11.6H2O,因此在多核普鲁士蓝类化合物中,通过改变作为自旋载体中心的过渡金属离子的类型,以及调节不同过渡金属离子的比例,可以控制化合物的磁性,如相变温度、饱和磁化强度,矫顽场等。
2.采用溶液共沉淀法合成了NBu4ZnII0.03FeII0.97[FeIII(ox)3](NBu4=N(C4H9)4+,ox=C2O42-),磁场为1KOe,温度在23K附近时,发现有一个补偿温度,当温度大于45K时,磁化率与温度的关系遵循居里-外斯定律。化合物的矫顽场Hc的大小是15KOe和剩余磁化强度Mr的大小是572.2 cm3·G·mol-1。合成了NBu4FeII0.07MnII0.93[FeIII(ox)3],研究了其磁性,并且比较了两个样品的磁性差异。
Design and synthesis of molecule-based magnets refer to many fields such as physics, chemistry, life sciences and materials.Molecular magnet means molecular configuration spin Vector(free radical or Paramagnetic ions) Synthesised in the solution with the properties of Magnet,which has the properties of Spontaneous magnetization under the Critical temperature.The common method of obtaining Molecular magnet is to choose the correct ligand and Bridging groups Magnetic ions to form the compound.we design molecular magnet through changing different kinds of ligand,Bridging groups and Magnetic ions to change the structure of compound and control their Magnetic.The magnetic of compound is related to the magnetic of magnetic ions and the properties of Bridging groups.cyano-bridged and complexes play an important role due to their special structure and outstanding magnetic properties as molecule-based magnets. In this thesis, the magnetic measurements and structural measurements are performed to study the magnetic properties, microstructure and magnetic coupling mechanism in molecular magnets based on transition metal complexes. We discover the compensation temperature in NBu4ZnII0.04FeII0.96[FeIII(ox)3], which is also confirmed reasonably in terms of the qualitative analysis. In the thesis, we have obtained the results in the following aspects:
1. Multimetallic prussian blue compounds Ni0.75Cu0.75[Fe(CN)6]·6.3H2O and was prepared by co-precipitation. The magnetic studies results show that the compound is ferromagnetic magnets, undergo a paramagnetic to the ferromagnetic transition temperature at 21.77K.The paramagnetic curie temperatureθ, residual magnetization Mr, and coercive field Hc are different from bimetallic Prussian Blue Compounds Ni3[Fe(CN)6]2·xH2O、Cu3[Fe(CN )6 ]2·11.6H2O.So in the multi-nuclear Prussian Blue Compounds,we can control the magnetic(Critical temperature,Saturation magnetization,coercive field) of compound through changing the type of transition metal ions and adjusting the proportion of different kinds of transition metal ions.
2.A mixed-metal compound NBu4ZnII0.03FeII0.97[FeIII(ox)3] was prepared by co-precipitation. The magnetic susceptibilities indicate that there exist a ferrimagnetic exchange interaction in the compound, and magnetic transition at 23K. A compensation temperature has found with the field being less than 1KOe. When the temperature is greater than 50K, the relationship between temperature and susceptibility follows Curie - Weiss law. The observed value of coercive field (Hc) and remanent magnetization (Mr) for the compound are 15KOe and 572.2 cm3·G·mol-1.A mixed-metal compound NBu4FeII0.07MnII0.93[FeIII(ox)3]was prepared by co-precipitation.we research it's structure and magnetic,at last,we compare the difference of the two samples.
1.溶液共沉淀法合成了多金属普鲁士蓝类化合物Ni0.75Cu0.75[Fe(CN)6]·6.3H2O。研究结果表明化合物为铁磁性磁体,顺磁向铁磁转变温度是21.77K,配合物的顺磁居里温度θ、剩余磁化强度Mr、矫顽场Hc不同于纯粹的双金属普鲁士蓝类化合物Ni3[Fe(CN)6]2·xH2O、Cu3[Fe(CN )6 ]2·11.6H2O,因此在多核普鲁士蓝类化合物中,通过改变作为自旋载体中心的过渡金属离子的类型,以及调节不同过渡金属离子的比例,可以控制化合物的磁性,如相变温度、饱和磁化强度,矫顽场等。
2.采用溶液共沉淀法合成了NBu4ZnII0.03FeII0.97[FeIII(ox)3](NBu4=N(C4H9)4+,ox=C2O42-),磁场为1KOe,温度在23K附近时,发现有一个补偿温度,当温度大于45K时,磁化率与温度的关系遵循居里-外斯定律。化合物的矫顽场Hc的大小是15KOe和剩余磁化强度Mr的大小是572.2 cm3·G·mol-1。合成了NBu4FeII0.07MnII0.93[FeIII(ox)3],研究了其磁性,并且比较了两个样品的磁性差异。
Design and synthesis of molecule-based magnets refer to many fields such as physics, chemistry, life sciences and materials.Molecular magnet means molecular configuration spin Vector(free radical or Paramagnetic ions) Synthesised in the solution with the properties of Magnet,which has the properties of Spontaneous magnetization under the Critical temperature.The common method of obtaining Molecular magnet is to choose the correct ligand and Bridging groups Magnetic ions to form the compound.we design molecular magnet through changing different kinds of ligand,Bridging groups and Magnetic ions to change the structure of compound and control their Magnetic.The magnetic of compound is related to the magnetic of magnetic ions and the properties of Bridging groups.cyano-bridged and complexes play an important role due to their special structure and outstanding magnetic properties as molecule-based magnets. In this thesis, the magnetic measurements and structural measurements are performed to study the magnetic properties, microstructure and magnetic coupling mechanism in molecular magnets based on transition metal complexes. We discover the compensation temperature in NBu4ZnII0.04FeII0.96[FeIII(ox)3], which is also confirmed reasonably in terms of the qualitative analysis. In the thesis, we have obtained the results in the following aspects:
1. Multimetallic prussian blue compounds Ni0.75Cu0.75[Fe(CN)6]·6.3H2O and was prepared by co-precipitation. The magnetic studies results show that the compound is ferromagnetic magnets, undergo a paramagnetic to the ferromagnetic transition temperature at 21.77K.The paramagnetic curie temperatureθ, residual magnetization Mr, and coercive field Hc are different from bimetallic Prussian Blue Compounds Ni3[Fe(CN)6]2·xH2O、Cu3[Fe(CN )6 ]2·11.6H2O.So in the multi-nuclear Prussian Blue Compounds,we can control the magnetic(Critical temperature,Saturation magnetization,coercive field) of compound through changing the type of transition metal ions and adjusting the proportion of different kinds of transition metal ions.
2.A mixed-metal compound NBu4ZnII0.03FeII0.97[FeIII(ox)3] was prepared by co-precipitation. The magnetic susceptibilities indicate that there exist a ferrimagnetic exchange interaction in the compound, and magnetic transition at 23K. A compensation temperature has found with the field being less than 1KOe. When the temperature is greater than 50K, the relationship between temperature and susceptibility follows Curie - Weiss law. The observed value of coercive field (Hc) and remanent magnetization (Mr) for the compound are 15KOe and 572.2 cm3·G·mol-1.A mixed-metal compound NBu4FeII0.07MnII0.93[FeIII(ox)3]was prepared by co-precipitation.we research it's structure and magnetic,at last,we compare the difference of the two samples.
引文
[1] A.Bhattacharjee,S.Iijima,F.Mizutani,et al:Magnetic susceptibility of some mixed-metal compounds NBu4Fe(II)[Fe(III)xCr(III)1-x(ox)3][J]Journal of Magnetism and Magnetic Material153(1996)235-240.
[2]MichielVerdaguer,A.Bleuzen,V.Marvaud,J.Vaissermann,M.Seuleiman,C.Desplanches,A.Scuiller,C.Train,R.Garde,G.gelly,C.Lomenech,I.Rosenman.P.Veillet,C.Cartier,F.Villain,et al:molecules to build solids:high Tc moleculed-based magnets by design and recent revival of cyano complexes chemistry[j].coordination chemistry reviews190-192(1999)1023-1047
[3] He Yun,Tang Guodong,Liang Fupei,Huang Yanjun,Huang Mali,Mossbauer investigation of the thermal phase transition in RbMnFe(CN)6[J].Journal of Alloys and compounds,2007,438:52-55.
[4] Sato O,Iyoda T,Fujishima A,Hashimoto K,Elctronichemically tunable magnetic phase transition in a high-Tc Chromium Cyanide thin film[J]. Science,1996,271:49-51.
[5]戴耀东,余智,分子基磁性材料的研究与展望[J],自然杂志,1999,24,15
[6] A. Kumar, S.M. Yusuf, Magnetic properties of multi-metal Prussian Blue analogue Co0.75Ni0.75[Fe(CN)6]? 6.8H2O[J]. Physica B, 2005, 362 : 278-285
[7] Guodong Tang,Yun He,Fupei Liang,et.al.Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J].Physica B,2007,392:337–340.
[8] Moritomo Y,Kato K,Kuriki A,Takata M,Sakata M,Tokoro H,Ohkoshi S.I,Hashimoto K,[J].Phys.Soc.Jpn.72(2003)2698.
[9]张月胜,若干分子磁体及磁性强关联体系的第一性原理研究,华中科技大学博士学位论文[M]. 2005
[10] Kollmar C, Kahn O, Ferromagnetic spin alignment in molecular systems: an orbital approach [J], Acc. Chem. Res. , 1993, 26: 259-262.
[11] H.M.McConnel,[J].Chem.Phys.,1963,39,1910
[12] Y Nakazawa, M Tamura, N Shirakawa, et al: Low-temperature magnetic properties of the ferromagnetic organic radical, p-nitrophenyl nitronyl nitroxide[J]. Phys Rev B, 1992, 46: 8906-8914.
[13] R Chiarelli, M A Novak, A Rassat, et al: A ferromagnetic transition at 1.48K in an organic nitroxide[J]. Nature, 1993, 363:147-149.
[14] R.Chiarelli,M.A.Novak,A.Rassat,[J]Nature,1993,363,147
[15] H.H.Wickman,A.M.Trozzolo,H.J.Williams,[J]Phys.Rev.,1967,15,563
[16] Sato O,Lyoda T,Fujushima A.Electrochemically Tunable Magnetic Phase Transition in a High-Tc Chromium CyanideThin Film[J].Science,1996,271:49-51
[17] Dujardin E,Ferley S,Phan X et al.Synthesis and Magnetization of New Room-temperature Molecule-based Magnets:Effect of Stoichiometry on Local Magnetic Structure by X-ray Magnetic Circular Dichroism[J]. J.Am.Chem. Soc.,1998, 120:11347-11352
[18]赵见高,迈向21世纪的磁学和磁性材料[J],物理,1996,25(1):9-15.。
[1]戴道生,钱昆明.铁磁学(上册)[M].北京:科学出版社,1998
[2]姜寿亭,李卫凝聚态磁性物理[M].北京:科学出版社2002
[3]田强,徐清云.凝聚态物理进展[M].北京:科学出版社, 2005
[4]阎守胜.固体物理基础[M].北京:北京大学出版社,2005
[5]潘道皑.物质结构[M].北京:高等教育出版社,2002
[6]理查德L.卡琳著,万纯娣等译.磁化学[M].南京:南京大学出版社,1990
[7]宛德福,马兴隆,磁性物理学[M]北京:电子工业出版社1998
[1]MichielVerdaguer,A.Bleuzen,V.Marvaud,J.Vaissermann,M.Seuleiman,C.Desplanches,A.Scuiller,C.Train,R.Garde,G.gelly,C.Lomenech,I.Rosenman.P.Veillet,C.Cartier,F.Villain,et al:molecules to build solids:high Tc moleculed-based magnets by design and recent revival of cyano complexes chemistry[j].coordination chemistry reviews190-192(1999)1023-1047
[2] He Yun,Dai Yao-Dong,Huang Hong-Bo,et.al,Mossbauer investigation of the ferromagnetic coupling in Copper-Iron[J].Chin Phys Lett,2003,20(9):1630-1633.
[3] Yun He,Guodong Tang,Fupei Liang,Yanjun Huang,Zhibo Chen,Mossbauer and magnetic studies in a FeIIIMn6IIIcluster[J].Physica B,2007,393:1–146.
[4] Seiichiro Iijima,Zentaro Honda,Subratanath Koner,et.al.Magnetic and Mossssbauer studies of cyanide-bridged bimetallic assembly [Mn(cyclam)][Fe(CN)6]·3H2O [J].Magn Magn Mater,2001,223:16-20.
[5]E.Reguera,E.MarínA.Calderón,J.Rodríguez-Hernández,Photo-induced charge transfer in Prussian blue analogues as detected byphotoacoustic spectroscopy[J].Spectrochim.Acta.A 2007,68:191-197.
[6] He Yun,Tang Guodong,Liang Fupei,Huang Yanjun,Huang Mali,Mossbauer investigation of the thermal phase transition in RbMnFe(CN)6[J].J Alloy Compd,2007,438:52-55.
[7] Ferlay S,Mallah T.,Ouahes R,Verdaguer M,A room-temperature organometallic magnet based on Prussian blue [J].Nature, 1995, 378 701-703
[8] Sato O,Iyoda T,Fujishima A,Hashimoto K,Elctronichemically tunable magnetic phase transition in a high-Tc Chromium Cyanide thin film[J]. Science,1996,271: 49-51.
[9] E.Coronado,M.C.Gimenez-Lopez,et al.Pressure-turning of magnetism and linkage isomerism in Iron(Ⅲ) hexacyanochromate[J].J Am Chem Soc,2005,127:4580-4581
[10] K.W.Chapman,P.L.Chupas,C.L.Kepert,Compositional dependence of negative thermal expansion in the prussian blue analogues MⅡPtⅣ(CN)6(M=Mn,Fe,Co,Ni,Cu,Zn,Cd)[J]. Am Chem Soc,2006,128(21):7009-7014.
[11] Guodong Tang,Yun He,Fupei Liang,et.al:Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J].Physica B,2007,392:337–340.
[12] A. Kumar, S.M. Yusuf,et.al: Magnetic properties of multi-metal Prussian Blue analogue Co0.75Ni0.75[Fe(CN)6]? 6.8H2O[J]. Physica B, 2005, 362 : 278-285.
[13]He Yun, Dai Yao-Dong, Huang Hong-Bo,et al. M?ssbauer Investigation of the Ferromagnetic Coupling in Copper-Iron Polycyanides[J]. Chin. Phys. Lett, 2003,20(9):1630-1633.
[14] S Juskzyk, C Johanssont, M Hansont, A Ratusmas, G Makckill,Ferromagnetism of the Me3[Fe(CN)6]·H20 compounds,where Me = Ni and Co[J]. J. Phys.: Condens. Matter, 1994, 6: 5697-5765.
[15] Kahn .O,Molecular magnetism [M ]. New York: VCH Publishers, 1993, 287-325.
[16] C. W. Ng, J. Ding, Y. Shi, L. M. Gan, Structure and magnetic properties of copper (II) hexacyanoferrate (III) compound [J]. J. Phys. Chem. Solid, 2001, 62: 767-775.
[1]闫冰,王诗玺,陈志达.新型一维链状氰根桥联配合物[Eu(DMF)-4(H2O)-2Mn(CN)-6·H2O]n的合成与晶体结构[J].高等学样化学学报,2001,22(2):167-170.
[2]寇会忠,廖代正.一种设计实用分子铁磁体的有效构件——普鲁士蓝类配合物[J].无机化学学报,1999,15(2):141-150.
[3]T.mallah,S.Thiebaut,M.Verdaguer,P.Veillet.High-TCMolecular-Based Magnets:Ferrimagnetic Mixed-Valence Chromium(Ⅲ)-Chromium(Ⅱ)Cyanides with TC at 240 and 190 Kelvi[J]Science,1993(5139),262:1554-1557.
[4]O.sato,T.lyoda,A.Fujishima,K.Hashimoto,Electrochemically Tunable Magnetic PhaseTransition in a Hign-Tc chromium Cyanide Thin Film[J].Science,1996,271(5245):49-50.
[5] Ferlay S,Mallah T,Ouahes R,et al.A room-Temperature Organometallic Magnet Based onPrussian Blue[J].Nature,1995,378(6558):701-703.
[6] S Decurtins, H W Schmalle, H R Oswald, et al: A polymeric two-dimensional mixed-metal network. Crystal structure and magnetic properties of {[P(Ph)4][MnCr(ox)3]}n[J].Inorg Chim Acta, 1994, 216: 65-73.
[7] C Mathoniere, C J Nutall, S G Carling, et al: Ferrimagnetic Mixed-Valency and Mixed-Metal Tris(oxalato)iron(III) Compounds: Synthesis, Structure, and Magnetism[J]. Inorg Chem, 1996, 35, 1201-1206.
[8] A Bhattacharjee, S Iijima, F Mizutani: Magnetic Susceptibility of Some Mixed-Metal Compounds NBu4Fe(II)[Fe(III)xCr(III)1-x(ox)3][J]. J Magn Magn Mater, 1996, 153: 235-240.
[9] R Pellaux, H W Schmalle, R Huber, et al: Molecular-Based Magnetism in Bimetallic Two-Dimensional Oxalate-Bridged Networks. An X-ray and Neutron Diffraction Study[J].Inorg Chem, 1997, 36, 2301-2308.
[10] G V Shilov, L O Atovmyan, N S Ovanesyan, et al: Russ J Coord Chem, 1998, 24, 305-310.
[11] A Bhattacharjee, R Feyerherm, M Steiner: Study of the Negative Magnetization Phenomenon in NBu4[FeIIFeIII(ox)3][J]. J Phys Soc Jpn, 1999, 68, 1679-1683.
[12] A BhaUacharjee, S lijima, F Mizutani, et al: Magnetic Susceptibility of Some Mixed-Metal Compounds: NBu4Zn(II)xFe(II)1-x[Fe(III)(ox)3][J]. Jpn J Appl Phys, Part 1, 1995, 34, 1521-1525.
[13] L O Atovmyan, G V Shilov, R N Lyubovskaya, et al: JETP Lett, 1993, 58, 766.
[14] C L Lin, Tan Yuen, G Y Jiang, et al: Studies of thermodynamic and magnetic properties of Ce1?xGdxSn3[J]. J Appl Phys, 1991, 70, 6092-6094.
[15] J C Bailar, E M Jones: Inorg Synth[M]. Mc Graw Hill Book Company Inc, New York and London,1939, 1: 37-38.
[16] Guodong Tang,Yun He, Fupei Liang, et al: Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J]. Physica B, 2007, 392, 337-340.
[17]卢文贯,潘育方,彭翠红:草酸根桥联的双核铜(Ⅱ)配合物[Cu2(phen)2(H2O)2(μ2-C2O4)](NO3)2的合成及晶体结构[J]. Chinese Journal of Inorganic Chemistry, 2005, Vol.21, No.5: 709-712.
[18]李晓刚,黄海富,何云等: NBu4ZnII0.04FeII0.96[FeIII(ox)3](NBu4=N(C4H9)4+)的磁性研究[J]广西师范大学学报(自然科学版)2009,27(3):45-48.
[19] Zhang L, Bu W M, Yan S P, et a1: Weaker magnetic interactions of oxalato-copper(II) binuclear compounds: synthesis, spectroscopy, crystal structure and magnetism[J]. Polyhedron, 2000, 19: 1105-1110.
[20] Bag B, Mondal N, Mitra S, et al: Synthesis, crystal structure and magnetic properties of a new oxalato-bridged binuclear copper(II) complex with a tridentate Schiff base ligand[J]. Polyhedron, 2001, 20: 2l13-2l16.
[21] Sujittra Y, Gerard A, Narongsak C, et al: Synthesis, spectroscopic characterization, X-ray crystal structure and magnetic properties of oxalato-bridged copper(II) dinuclear complexes with di-2-pyridylamine[J]. Inorg Chim Acta, 2003, 353: l19-128.
[22] Donatella Armentano, Giovanni De Munno, Francesc Lloret, et al: Novel Chiral Three-Dimensional Iron(III) Compound Exhibiting Magnetic Ordering at Tc = 40 K[J]. Inorg Chem, 2002, 41, 2007-2013.
[2]MichielVerdaguer,A.Bleuzen,V.Marvaud,J.Vaissermann,M.Seuleiman,C.Desplanches,A.Scuiller,C.Train,R.Garde,G.gelly,C.Lomenech,I.Rosenman.P.Veillet,C.Cartier,F.Villain,et al:molecules to build solids:high Tc moleculed-based magnets by design and recent revival of cyano complexes chemistry[j].coordination chemistry reviews190-192(1999)1023-1047
[3] He Yun,Tang Guodong,Liang Fupei,Huang Yanjun,Huang Mali,Mossbauer investigation of the thermal phase transition in RbMnFe(CN)6[J].Journal of Alloys and compounds,2007,438:52-55.
[4] Sato O,Iyoda T,Fujishima A,Hashimoto K,Elctronichemically tunable magnetic phase transition in a high-Tc Chromium Cyanide thin film[J]. Science,1996,271:49-51.
[5]戴耀东,余智,分子基磁性材料的研究与展望[J],自然杂志,1999,24,15
[6] A. Kumar, S.M. Yusuf, Magnetic properties of multi-metal Prussian Blue analogue Co0.75Ni0.75[Fe(CN)6]? 6.8H2O[J]. Physica B, 2005, 362 : 278-285
[7] Guodong Tang,Yun He,Fupei Liang,et.al.Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J].Physica B,2007,392:337–340.
[8] Moritomo Y,Kato K,Kuriki A,Takata M,Sakata M,Tokoro H,Ohkoshi S.I,Hashimoto K,[J].Phys.Soc.Jpn.72(2003)2698.
[9]张月胜,若干分子磁体及磁性强关联体系的第一性原理研究,华中科技大学博士学位论文[M]. 2005
[10] Kollmar C, Kahn O, Ferromagnetic spin alignment in molecular systems: an orbital approach [J], Acc. Chem. Res. , 1993, 26: 259-262.
[11] H.M.McConnel,[J].Chem.Phys.,1963,39,1910
[12] Y Nakazawa, M Tamura, N Shirakawa, et al: Low-temperature magnetic properties of the ferromagnetic organic radical, p-nitrophenyl nitronyl nitroxide[J]. Phys Rev B, 1992, 46: 8906-8914.
[13] R Chiarelli, M A Novak, A Rassat, et al: A ferromagnetic transition at 1.48K in an organic nitroxide[J]. Nature, 1993, 363:147-149.
[14] R.Chiarelli,M.A.Novak,A.Rassat,[J]Nature,1993,363,147
[15] H.H.Wickman,A.M.Trozzolo,H.J.Williams,[J]Phys.Rev.,1967,15,563
[16] Sato O,Lyoda T,Fujushima A.Electrochemically Tunable Magnetic Phase Transition in a High-Tc Chromium CyanideThin Film[J].Science,1996,271:49-51
[17] Dujardin E,Ferley S,Phan X et al.Synthesis and Magnetization of New Room-temperature Molecule-based Magnets:Effect of Stoichiometry on Local Magnetic Structure by X-ray Magnetic Circular Dichroism[J]. J.Am.Chem. Soc.,1998, 120:11347-11352
[18]赵见高,迈向21世纪的磁学和磁性材料[J],物理,1996,25(1):9-15.。
[1]戴道生,钱昆明.铁磁学(上册)[M].北京:科学出版社,1998
[2]姜寿亭,李卫凝聚态磁性物理[M].北京:科学出版社2002
[3]田强,徐清云.凝聚态物理进展[M].北京:科学出版社, 2005
[4]阎守胜.固体物理基础[M].北京:北京大学出版社,2005
[5]潘道皑.物质结构[M].北京:高等教育出版社,2002
[6]理查德L.卡琳著,万纯娣等译.磁化学[M].南京:南京大学出版社,1990
[7]宛德福,马兴隆,磁性物理学[M]北京:电子工业出版社1998
[1]MichielVerdaguer,A.Bleuzen,V.Marvaud,J.Vaissermann,M.Seuleiman,C.Desplanches,A.Scuiller,C.Train,R.Garde,G.gelly,C.Lomenech,I.Rosenman.P.Veillet,C.Cartier,F.Villain,et al:molecules to build solids:high Tc moleculed-based magnets by design and recent revival of cyano complexes chemistry[j].coordination chemistry reviews190-192(1999)1023-1047
[2] He Yun,Dai Yao-Dong,Huang Hong-Bo,et.al,Mossbauer investigation of the ferromagnetic coupling in Copper-Iron[J].Chin Phys Lett,2003,20(9):1630-1633.
[3] Yun He,Guodong Tang,Fupei Liang,Yanjun Huang,Zhibo Chen,Mossbauer and magnetic studies in a FeIIIMn6IIIcluster[J].Physica B,2007,393:1–146.
[4] Seiichiro Iijima,Zentaro Honda,Subratanath Koner,et.al.Magnetic and Mossssbauer studies of cyanide-bridged bimetallic assembly [Mn(cyclam)][Fe(CN)6]·3H2O [J].Magn Magn Mater,2001,223:16-20.
[5]E.Reguera,E.MarínA.Calderón,J.Rodríguez-Hernández,Photo-induced charge transfer in Prussian blue analogues as detected byphotoacoustic spectroscopy[J].Spectrochim.Acta.A 2007,68:191-197.
[6] He Yun,Tang Guodong,Liang Fupei,Huang Yanjun,Huang Mali,Mossbauer investigation of the thermal phase transition in RbMnFe(CN)6[J].J Alloy Compd,2007,438:52-55.
[7] Ferlay S,Mallah T.,Ouahes R,Verdaguer M,A room-temperature organometallic magnet based on Prussian blue [J].Nature, 1995, 378 701-703
[8] Sato O,Iyoda T,Fujishima A,Hashimoto K,Elctronichemically tunable magnetic phase transition in a high-Tc Chromium Cyanide thin film[J]. Science,1996,271: 49-51.
[9] E.Coronado,M.C.Gimenez-Lopez,et al.Pressure-turning of magnetism and linkage isomerism in Iron(Ⅲ) hexacyanochromate[J].J Am Chem Soc,2005,127:4580-4581
[10] K.W.Chapman,P.L.Chupas,C.L.Kepert,Compositional dependence of negative thermal expansion in the prussian blue analogues MⅡPtⅣ(CN)6(M=Mn,Fe,Co,Ni,Cu,Zn,Cd)[J]. Am Chem Soc,2006,128(21):7009-7014.
[11] Guodong Tang,Yun He,Fupei Liang,et.al:Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J].Physica B,2007,392:337–340.
[12] A. Kumar, S.M. Yusuf,et.al: Magnetic properties of multi-metal Prussian Blue analogue Co0.75Ni0.75[Fe(CN)6]? 6.8H2O[J]. Physica B, 2005, 362 : 278-285.
[13]He Yun, Dai Yao-Dong, Huang Hong-Bo,et al. M?ssbauer Investigation of the Ferromagnetic Coupling in Copper-Iron Polycyanides[J]. Chin. Phys. Lett, 2003,20(9):1630-1633.
[14] S Juskzyk, C Johanssont, M Hansont, A Ratusmas, G Makckill,Ferromagnetism of the Me3[Fe(CN)6]·H20 compounds,where Me = Ni and Co[J]. J. Phys.: Condens. Matter, 1994, 6: 5697-5765.
[15] Kahn .O,Molecular magnetism [M ]. New York: VCH Publishers, 1993, 287-325.
[16] C. W. Ng, J. Ding, Y. Shi, L. M. Gan, Structure and magnetic properties of copper (II) hexacyanoferrate (III) compound [J]. J. Phys. Chem. Solid, 2001, 62: 767-775.
[1]闫冰,王诗玺,陈志达.新型一维链状氰根桥联配合物[Eu(DMF)-4(H2O)-2Mn(CN)-6·H2O]n的合成与晶体结构[J].高等学样化学学报,2001,22(2):167-170.
[2]寇会忠,廖代正.一种设计实用分子铁磁体的有效构件——普鲁士蓝类配合物[J].无机化学学报,1999,15(2):141-150.
[3]T.mallah,S.Thiebaut,M.Verdaguer,P.Veillet.High-TCMolecular-Based Magnets:Ferrimagnetic Mixed-Valence Chromium(Ⅲ)-Chromium(Ⅱ)Cyanides with TC at 240 and 190 Kelvi[J]Science,1993(5139),262:1554-1557.
[4]O.sato,T.lyoda,A.Fujishima,K.Hashimoto,Electrochemically Tunable Magnetic PhaseTransition in a Hign-Tc chromium Cyanide Thin Film[J].Science,1996,271(5245):49-50.
[5] Ferlay S,Mallah T,Ouahes R,et al.A room-Temperature Organometallic Magnet Based onPrussian Blue[J].Nature,1995,378(6558):701-703.
[6] S Decurtins, H W Schmalle, H R Oswald, et al: A polymeric two-dimensional mixed-metal network. Crystal structure and magnetic properties of {[P(Ph)4][MnCr(ox)3]}n[J].Inorg Chim Acta, 1994, 216: 65-73.
[7] C Mathoniere, C J Nutall, S G Carling, et al: Ferrimagnetic Mixed-Valency and Mixed-Metal Tris(oxalato)iron(III) Compounds: Synthesis, Structure, and Magnetism[J]. Inorg Chem, 1996, 35, 1201-1206.
[8] A Bhattacharjee, S Iijima, F Mizutani: Magnetic Susceptibility of Some Mixed-Metal Compounds NBu4Fe(II)[Fe(III)xCr(III)1-x(ox)3][J]. J Magn Magn Mater, 1996, 153: 235-240.
[9] R Pellaux, H W Schmalle, R Huber, et al: Molecular-Based Magnetism in Bimetallic Two-Dimensional Oxalate-Bridged Networks. An X-ray and Neutron Diffraction Study[J].Inorg Chem, 1997, 36, 2301-2308.
[10] G V Shilov, L O Atovmyan, N S Ovanesyan, et al: Russ J Coord Chem, 1998, 24, 305-310.
[11] A Bhattacharjee, R Feyerherm, M Steiner: Study of the Negative Magnetization Phenomenon in NBu4[FeIIFeIII(ox)3][J]. J Phys Soc Jpn, 1999, 68, 1679-1683.
[12] A BhaUacharjee, S lijima, F Mizutani, et al: Magnetic Susceptibility of Some Mixed-Metal Compounds: NBu4Zn(II)xFe(II)1-x[Fe(III)(ox)3][J]. Jpn J Appl Phys, Part 1, 1995, 34, 1521-1525.
[13] L O Atovmyan, G V Shilov, R N Lyubovskaya, et al: JETP Lett, 1993, 58, 766.
[14] C L Lin, Tan Yuen, G Y Jiang, et al: Studies of thermodynamic and magnetic properties of Ce1?xGdxSn3[J]. J Appl Phys, 1991, 70, 6092-6094.
[15] J C Bailar, E M Jones: Inorg Synth[M]. Mc Graw Hill Book Company Inc, New York and London,1939, 1: 37-38.
[16] Guodong Tang,Yun He, Fupei Liang, et al: Multiple magnetic-pole reversals in the molecular-based mixed-valency ferrimagnet {[N(n-C4H9)4][FeFe(C2O4)3]}n[J]. Physica B, 2007, 392, 337-340.
[17]卢文贯,潘育方,彭翠红:草酸根桥联的双核铜(Ⅱ)配合物[Cu2(phen)2(H2O)2(μ2-C2O4)](NO3)2的合成及晶体结构[J]. Chinese Journal of Inorganic Chemistry, 2005, Vol.21, No.5: 709-712.
[18]李晓刚,黄海富,何云等: NBu4ZnII0.04FeII0.96[FeIII(ox)3](NBu4=N(C4H9)4+)的磁性研究[J]广西师范大学学报(自然科学版)2009,27(3):45-48.
[19] Zhang L, Bu W M, Yan S P, et a1: Weaker magnetic interactions of oxalato-copper(II) binuclear compounds: synthesis, spectroscopy, crystal structure and magnetism[J]. Polyhedron, 2000, 19: 1105-1110.
[20] Bag B, Mondal N, Mitra S, et al: Synthesis, crystal structure and magnetic properties of a new oxalato-bridged binuclear copper(II) complex with a tridentate Schiff base ligand[J]. Polyhedron, 2001, 20: 2l13-2l16.
[21] Sujittra Y, Gerard A, Narongsak C, et al: Synthesis, spectroscopic characterization, X-ray crystal structure and magnetic properties of oxalato-bridged copper(II) dinuclear complexes with di-2-pyridylamine[J]. Inorg Chim Acta, 2003, 353: l19-128.
[22] Donatella Armentano, Giovanni De Munno, Francesc Lloret, et al: Novel Chiral Three-Dimensional Iron(III) Compound Exhibiting Magnetic Ordering at Tc = 40 K[J]. Inorg Chem, 2002, 41, 2007-2013.