Morphology and magnetic traits of strontium nanohexaferrites:Effects of manganese/yttrium co-substitution
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摘要
Doped strontium(Sr) hexaferrites appeared potential candidates for microwave absorber applications.Driven by this idea, we examined the influence of manganese(Mn) and yttrium(Y) co-substitution on the microstructures,morphology and magnetic properties of Sr nanohexaferrites(Sr_(1-x)Mn_xFe_(12-y)Y_yO_(19),where 0.0 ≤ x = y ≤ 0.5) synthesized via citrate sol-gel auto-combustion technique. As-prepared samples were thoroughly characterized using diverse analytical tools. X-ray diffraction pattern reveals a single Mhexagonal crystalline phase. FE-SEM, TEM, HR-TEM show a hexagonal platelet-like structure. The magnetic hysteresis loops(measured at room and low temperature) of the as-prepared nanohexaferrites exhibit ferromagnetic(FM) behavior. Magnetic parameters including the saturation magnetization,remanence, coercive and magneto-crystalline anisotropy field are found to decrease with the increase in Mn~(2+) and Y~(3+) contents. Zero-and normal-field cooled magnetization measurements in the range of 2-400 K display the complete absence of blocking temperature, confirming the characteristic ferromagnetic behavior of the proposed composition.
Doped strontium(Sr) hexaferrites appeared potential candidates for microwave absorber applications.Driven by this idea, we examined the influence of manganese(Mn) and yttrium(Y) co-substitution on the microstructures,morphology and magnetic properties of Sr nanohexaferrites(Sr_(1-x)Mn_xFe_(12-y)Y_yO_(19),where 0.0 ≤ x = y ≤ 0.5) synthesized via citrate sol-gel auto-combustion technique. As-prepared samples were thoroughly characterized using diverse analytical tools. X-ray diffraction pattern reveals a single Mhexagonal crystalline phase. FE-SEM, TEM, HR-TEM show a hexagonal platelet-like structure. The magnetic hysteresis loops(measured at room and low temperature) of the as-prepared nanohexaferrites exhibit ferromagnetic(FM) behavior. Magnetic parameters including the saturation magnetization,remanence, coercive and magneto-crystalline anisotropy field are found to decrease with the increase in Mn~(2+) and Y~(3+) contents. Zero-and normal-field cooled magnetization measurements in the range of 2-400 K display the complete absence of blocking temperature, confirming the characteristic ferromagnetic behavior of the proposed composition.
Doped strontium(Sr) hexaferrites appeared potential candidates for microwave absorber applications.Driven by this idea, we examined the influence of manganese(Mn) and yttrium(Y) co-substitution on the microstructures,morphology and magnetic properties of Sr nanohexaferrites(Sr_(1-x)Mn_xFe_(12-y)Y_yO_(19),where 0.0 ≤ x = y ≤ 0.5) synthesized via citrate sol-gel auto-combustion technique. As-prepared samples were thoroughly characterized using diverse analytical tools. X-ray diffraction pattern reveals a single Mhexagonal crystalline phase. FE-SEM, TEM, HR-TEM show a hexagonal platelet-like structure. The magnetic hysteresis loops(measured at room and low temperature) of the as-prepared nanohexaferrites exhibit ferromagnetic(FM) behavior. Magnetic parameters including the saturation magnetization,remanence, coercive and magneto-crystalline anisotropy field are found to decrease with the increase in Mn~(2+) and Y~(3+) contents. Zero-and normal-field cooled magnetization measurements in the range of 2-400 K display the complete absence of blocking temperature, confirming the characteristic ferromagnetic behavior of the proposed composition.
引文
1.Chu H, Guo YX, Shi XQ.60 GHz LTCC 3D cavity bandpass filter with two finite transmission zeros.Electron Lett.2011;47:324.
2.Chung DDL.Electromagnetic interference shielding effectiveness of carbon materials.Carbon.2001;39:279.
3.Ghasemi A, Morisako A.Structural and electromagnetic characteristics of substituted strontium hexaferrite nanopartides.J Magn Magn Mater.2008;320:1167.
4.Singh P, Babbar VK, Razdan A, Puri RK, Goel TC.Complex Permittivity,permeability, and X-band microwave absorption of CaCoTi ferrite composites.J Appl Phys.2000;87:4362.
5.Huang TX, Peng L, Li LZ, Wang R, Hu Y, Tu XQ.Low temperature sintering behavior of La-Co substituted M-type strontium hexaferrites for use in microwave LTCC technology.J Rare Earths.2016;34:148.
6.Li J, Zhang HW, Li Q, Li YX, Yu GL Influence of La-Co substitution on the structure and magnetic properties of low-temperature sintered M-type barium ferrites.J Rare Earths.2013;31:983.
7.Iqbal MJ, Ashiq MN, Gomez PH, Munoz JM, Cabrera CT.Influence of annealing temperature and doping rate on the magnetic properties of Zr-Mn substituted Sr-hexaferrite nanoparticles.J Alloys Compd.2010;500:113.
8.Ghasemi A, Liu X, Morisako A.Effect of additional elements on the structural properties, magnetic characteristics and natural resonance frequency of strontium ferrite nanoparticles/polymer composite.IEEE Trans Magn.2009;45:4420.
9.Bercoff PG, Hermeb C, Jacobo SE.The influence of Nd-Co substitution on the magnetic properties of non-stoichiometric strontium hexaferrite nanoparticles.J Magn Magn Mater.2009;321:2245.
10.Ogata Y, Takami T, Kubota Y.Development of La-Co substituted ferrite magnets.J Jpn Soc Powder Metall.2003;50:636.
11.Almessiere MA, Slimani Y, El Sayed HS, Baykal A.Ce-Y co-substituted Strontium nanohexaferrites:AC susceptibility and Mossbauer studies.Ceram Int.2018;44:12520.
12.Kang Y-M, Moon K-S.Magnetic properties of Ce-Mn substituted M-type Srhexaferrites.Ceram Int.2015;41:12828.
13.Almessiere MA, Slimani Y, Güngünes H, El Sayed HS, Baykal A.AC susceptibility and Mossbauer study of Ce~(3+)ion substituted SrFe_(12)O_(19)nanohexaferrites.Ceram Int.2018;44:10470.
14.Gordani GR, Ghasemi A, Saidi A.Enhanced magnetic properties of substituted Sr-hexaferrite nanoparticles synthesized by co-precipitation method.Ceram Int.2014;40:4945.
15.Yang YJ, Wang FH, Liu XS, Shao JX, Huang DH.Magnetic and microstructural properties of A1 substituted M-type Ca-Sr hexaferrites.J Magn Magn Mater.2017;421:349.
16.Akhtar MN, Sulong AB, Akhtar MN, Khan MA.Systematic study of Ce~(3+)on the structural and magnetic properties of Cu nanosized ferrites for potential applications.J Rare Earths.2018;36:156.
17.Baniasadi A, Ghasemi A, Nemati A, Ghadikolaei MA, PaimozdE.Effect of Ti-Zn substitution on structural, magnetic and microwave absorption characteristics of strontium hexaferrite.J Alloys Compd.2014;583:325.
18.Luo H, Rai BK, Mishra SR, Voung NN, Liu JP.Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared by autocombustion route.J Magn Magn Mater.2012;324:2602.
19.Ramimoghadam D, Bagheri S, Hamid SBA.Stable monodisperse nanomagnetic colloidal suspensions:an overview.Colloids Surfaces B Biointerfaces.2015;133:388.
20.Stoner EC, Wohlfarth EP.A mechanism of magnetic hysteresis in heterogeneous alloys.IEEE Trans Magn.1991;27:3475.
21.Almessiere MA, Slimani Y, El Sayed HS, Baykal A.Structural and magnetic properties of Ce-Y substituted Strontium nanohexaferrites.Ceram Int.2018;44:12511.
22.Almessiere MA, Slimani Y, Baykal A.Structural and magnetic properties of Cedoped Strontium hexaferrite.Ceram Int.2018;44:9000.
23.Mihalik M, Sirenko V, Balbashov AM, Eremenko V, Mihalik M, Zentkova M.The magnetic properties of single crystal SrCo_2Ti_2Fe_8O_(19)compound.Phys Procedia.2015;75:259.
24.Xia AL, Zuo CH, Chen L, Jin CG, Lv YH.Hexagonal SrFe_(12)O_(19)ferrites:hydrothermal synthesis and their sintering properties.J Magn Magn Mater.2013;332:186.
25.Katlakunta S, Meena SS, Srinath S, Bououdina M, Sandhya R, Praveena K.Improved magnetic properties of Cr~(3+)doped SrFe_(12)O_(19)synthesized via microwave hydrothermal route.Mater Res Bull.2015;63:58.
26.Ali I, Islam MU, Awan MS, Ahmad M, Ashiq MN, Naseem S.Effect of Tb~(3+)substitution on the structural and magnetic properties of M-type hexaferrites synthesized by sol-gel auto-combustion technique.J Alloys Compd.2013;550:564.
27.Ashiq MN, Qureshi RB, Malana MA, Ehsan MF.Fabrication, structural, dielectric and magnetic properties of tantalum and potassium doped M-type strontium calcium hexaferrites.J Alloys Compd.2015;651:266.
28.Thakur A, Singh RR, Barman PB.Synthesis and characterizations of Nd~(3+)doped SrFe_(12)O_(19)nanoparticles.Mater Chem Phys.2013;141:562.
29.Ashiq MN, Shakoor S, Najam-ul-Haq M, Warsi MF, Ali I, Shakir I.Structural,electrical, dielectric and magnetic properties of Gd-Sn substituted Srhexaferrite synthesized by sol-gel combustion method.J Magn Magn Mater.2015;374:173.
30.Wu Z, Zhang RN, Yu ZW, Shan LW, Dong LM, Zhang XY.Study on preparation and magnetic properties of Sr_(1-x)Gd_xFe_(12-x)Cu_xO_(19)(0.00≤x≤0.20)strontium ferrite prepared by solid phase method.Ferroelectrics.2018;523:82.
31.Winataputra DS, Ujiyanti TL, Adi WA.The structure, magnetic and absorption properties of Zn-Ti substituted barium-strontium Hexaferrite prepared by mechanochemical process.IOP Conf Se.Mater Sci.2017;202, 012090.
32.Peng L, Li LZ, Zhong XX, Wang R, Tu XQ.Crystal structure and physical properties of microwave sintered Sr_(1-x)La_xFe_(12-x)Cu_xO_(19)(x=0-0.5)ferrites for LTCC applications.J Magn Magn Mater.2016;411:62.
33.Peng L, Li LZ.Magnetic,electrical and dielectric properties of microwave sintered Sr_(1-x)La_xFe_(12-x)Ni_xO_(19)(x=0-0.35)hexaferrites used for nonreciprocal LTCF devices.J Mater Sci Mater Electron.2017;28:17816.
34.Amir Md, Gungunes H, Slimani Y, Tashkandi N, El Sayed HS, Aldakheel F, et al.Mossbauer studies and magnetic properties of cubic CuFe_2O_4 nanoparticles.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4733-5.
35.Korkmaz AD, Güner S, Slimani Y, Gungunes H, Amir Md, Manikandan A, et al.Micro structural, optical and magnetic properties of vanadium substituted nickel spinel nano-ferrites.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4793-6.
36.Slimani Y, Güngünes H, Nawaz M, Manikandan A, El Sayed HS, Almessiere MA,et al.Magneto-optical and microstructural properties of spinel cubic copper ferrites with Li-Al co-substitution.Ceram Int.2018;44:14242.
37.Almessiere MA, Slimani Y, Baykal A.Structural, morphological and magnetic properties of hard/soft SrFe_(12-x)V_xO_(19)/(Ni_(0.5)Mn_(0.5)Fe_2O_4)_y nanocomposites:effect of vanadium substitution.J Alloys Compd.2018;767:966.
38.Almessiere MA, Slimani Y, Baykal A.Exchange spring magnetic behavior of Sr_(0.3)Ba_(0.4)Pb_(0.3)Fe_(12)O_(19)/(CuFe_2O_4)_x nanocomposites fabricated by a one-pot citrate sol-gel combustion method.J Alloys Compd.2018;762:389.
39.Topkaya R, Akman(O|¨), Kazan S, Aktas B, Durmus Z, Baykal A.Surface spin disorder and spin-glass-like behaviour in manganese-substituted cobalt ferrite nanoparticles.J Nanoparticle Res.2012;14:1.
40.Kurtan U, Topkaya R, Baykal A, Toprak M.Temperature dependent magnetic properties of CoFe_2O_4/CTAB nanocomposite synthesized by sol-gel autocombustion technique.Ceram Int.2013;39:6551.
41.Topkaya R.Effect of Zn substitution on temperature dependent magnetic properties of BaFe_(12)O_(19)hexaferrites.J Alloys Compd.2017;725:1230.
42.Topkaya R, Auwal I, Baykal A.Effect of temperature on magnetic properties of BaY_xFe_(12-x)O_(19)hexaferrites.Ceram Int.2016;42:16296.
43.Almessiere MA, Slimani Y, El Sayed HS, Baykal A, Ercan I.Microstructural and magnetic investigation of vanadium-substituted Sr-nanohexaferrite.J Magn Magn Mater.2019;471:124.
44.Almessiere MA, Slimani Y, El Sayed HS, Baykal A, Ali S, Ercan I.Investigation of microstructural and magnetic properties of BaV_xFe_(12-x)O_(19)nanohexaferrites.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4856-8.
45.Slimani Y, Baykal A, Amir Md, Tashkandi N, Güngünes H, Guner S, et al.Substitution effect of Cr~(3+)on hyperfine interactions, magnetic and optical properties of Sr-hexaferrites.Ceram Int.2018;44:15995.
46.Srinath S, Kumar MM, Sahner K, Post ML, Wickles M, Moos R, et al.Magnetization in insulating phases of Ti~(4+)doped SrFeO_(3-δ).J Appl Phys.2006;99,08S904.
47.Peddis D, Cannas C, Piccaluga G, Agostinelli E, Fiorani D.Surface spin freezing effects on enhanced saturation magnetization and magnetic anisotropy in CoFe_2O_4 nanoparticles.Nanotechnology.2010;21:125705.
48.Chen X, Bedanta S, Petracic O, Kleemann W, Sahoo S, Cardoso S, et al.Superparamagnetism versus superspin glass behavior in dilute magnetic nanoparticle systems.Phys Rev B.2005;72:214436.
49.Slimani Y, Almessiere MA, Baykal A.AC susceptibility study of Cu substituted BaFe_(12)O_(19)nanohexaferrites.Ceram Int.2018;44:13097.
50.Slimani Y, Baykal A, Manikandan A.Effect of Cr~(3+)substitution on AC susceptibility of Ba hexaferrite nanoparticles.J Magn Magn Mater.2018;458:204.
51.Almessiere MA, Slimani Y, Güngünes H, El Sayed HS, Baykal A.AC susceptibility and hyperfine interactions of vanadium substituted barium nanohexaferrites.Ceram Int.2018;44:17749.
2.Chung DDL.Electromagnetic interference shielding effectiveness of carbon materials.Carbon.2001;39:279.
3.Ghasemi A, Morisako A.Structural and electromagnetic characteristics of substituted strontium hexaferrite nanopartides.J Magn Magn Mater.2008;320:1167.
4.Singh P, Babbar VK, Razdan A, Puri RK, Goel TC.Complex Permittivity,permeability, and X-band microwave absorption of CaCoTi ferrite composites.J Appl Phys.2000;87:4362.
5.Huang TX, Peng L, Li LZ, Wang R, Hu Y, Tu XQ.Low temperature sintering behavior of La-Co substituted M-type strontium hexaferrites for use in microwave LTCC technology.J Rare Earths.2016;34:148.
6.Li J, Zhang HW, Li Q, Li YX, Yu GL Influence of La-Co substitution on the structure and magnetic properties of low-temperature sintered M-type barium ferrites.J Rare Earths.2013;31:983.
7.Iqbal MJ, Ashiq MN, Gomez PH, Munoz JM, Cabrera CT.Influence of annealing temperature and doping rate on the magnetic properties of Zr-Mn substituted Sr-hexaferrite nanoparticles.J Alloys Compd.2010;500:113.
8.Ghasemi A, Liu X, Morisako A.Effect of additional elements on the structural properties, magnetic characteristics and natural resonance frequency of strontium ferrite nanoparticles/polymer composite.IEEE Trans Magn.2009;45:4420.
9.Bercoff PG, Hermeb C, Jacobo SE.The influence of Nd-Co substitution on the magnetic properties of non-stoichiometric strontium hexaferrite nanoparticles.J Magn Magn Mater.2009;321:2245.
10.Ogata Y, Takami T, Kubota Y.Development of La-Co substituted ferrite magnets.J Jpn Soc Powder Metall.2003;50:636.
11.Almessiere MA, Slimani Y, El Sayed HS, Baykal A.Ce-Y co-substituted Strontium nanohexaferrites:AC susceptibility and Mossbauer studies.Ceram Int.2018;44:12520.
12.Kang Y-M, Moon K-S.Magnetic properties of Ce-Mn substituted M-type Srhexaferrites.Ceram Int.2015;41:12828.
13.Almessiere MA, Slimani Y, Güngünes H, El Sayed HS, Baykal A.AC susceptibility and Mossbauer study of Ce~(3+)ion substituted SrFe_(12)O_(19)nanohexaferrites.Ceram Int.2018;44:10470.
14.Gordani GR, Ghasemi A, Saidi A.Enhanced magnetic properties of substituted Sr-hexaferrite nanoparticles synthesized by co-precipitation method.Ceram Int.2014;40:4945.
15.Yang YJ, Wang FH, Liu XS, Shao JX, Huang DH.Magnetic and microstructural properties of A1 substituted M-type Ca-Sr hexaferrites.J Magn Magn Mater.2017;421:349.
16.Akhtar MN, Sulong AB, Akhtar MN, Khan MA.Systematic study of Ce~(3+)on the structural and magnetic properties of Cu nanosized ferrites for potential applications.J Rare Earths.2018;36:156.
17.Baniasadi A, Ghasemi A, Nemati A, Ghadikolaei MA, PaimozdE.Effect of Ti-Zn substitution on structural, magnetic and microwave absorption characteristics of strontium hexaferrite.J Alloys Compd.2014;583:325.
18.Luo H, Rai BK, Mishra SR, Voung NN, Liu JP.Physical and magnetic properties of highly aluminum doped strontium ferrite nanoparticles prepared by autocombustion route.J Magn Magn Mater.2012;324:2602.
19.Ramimoghadam D, Bagheri S, Hamid SBA.Stable monodisperse nanomagnetic colloidal suspensions:an overview.Colloids Surfaces B Biointerfaces.2015;133:388.
20.Stoner EC, Wohlfarth EP.A mechanism of magnetic hysteresis in heterogeneous alloys.IEEE Trans Magn.1991;27:3475.
21.Almessiere MA, Slimani Y, El Sayed HS, Baykal A.Structural and magnetic properties of Ce-Y substituted Strontium nanohexaferrites.Ceram Int.2018;44:12511.
22.Almessiere MA, Slimani Y, Baykal A.Structural and magnetic properties of Cedoped Strontium hexaferrite.Ceram Int.2018;44:9000.
23.Mihalik M, Sirenko V, Balbashov AM, Eremenko V, Mihalik M, Zentkova M.The magnetic properties of single crystal SrCo_2Ti_2Fe_8O_(19)compound.Phys Procedia.2015;75:259.
24.Xia AL, Zuo CH, Chen L, Jin CG, Lv YH.Hexagonal SrFe_(12)O_(19)ferrites:hydrothermal synthesis and their sintering properties.J Magn Magn Mater.2013;332:186.
25.Katlakunta S, Meena SS, Srinath S, Bououdina M, Sandhya R, Praveena K.Improved magnetic properties of Cr~(3+)doped SrFe_(12)O_(19)synthesized via microwave hydrothermal route.Mater Res Bull.2015;63:58.
26.Ali I, Islam MU, Awan MS, Ahmad M, Ashiq MN, Naseem S.Effect of Tb~(3+)substitution on the structural and magnetic properties of M-type hexaferrites synthesized by sol-gel auto-combustion technique.J Alloys Compd.2013;550:564.
27.Ashiq MN, Qureshi RB, Malana MA, Ehsan MF.Fabrication, structural, dielectric and magnetic properties of tantalum and potassium doped M-type strontium calcium hexaferrites.J Alloys Compd.2015;651:266.
28.Thakur A, Singh RR, Barman PB.Synthesis and characterizations of Nd~(3+)doped SrFe_(12)O_(19)nanoparticles.Mater Chem Phys.2013;141:562.
29.Ashiq MN, Shakoor S, Najam-ul-Haq M, Warsi MF, Ali I, Shakir I.Structural,electrical, dielectric and magnetic properties of Gd-Sn substituted Srhexaferrite synthesized by sol-gel combustion method.J Magn Magn Mater.2015;374:173.
30.Wu Z, Zhang RN, Yu ZW, Shan LW, Dong LM, Zhang XY.Study on preparation and magnetic properties of Sr_(1-x)Gd_xFe_(12-x)Cu_xO_(19)(0.00≤x≤0.20)strontium ferrite prepared by solid phase method.Ferroelectrics.2018;523:82.
31.Winataputra DS, Ujiyanti TL, Adi WA.The structure, magnetic and absorption properties of Zn-Ti substituted barium-strontium Hexaferrite prepared by mechanochemical process.IOP Conf Se.Mater Sci.2017;202, 012090.
32.Peng L, Li LZ, Zhong XX, Wang R, Tu XQ.Crystal structure and physical properties of microwave sintered Sr_(1-x)La_xFe_(12-x)Cu_xO_(19)(x=0-0.5)ferrites for LTCC applications.J Magn Magn Mater.2016;411:62.
33.Peng L, Li LZ.Magnetic,electrical and dielectric properties of microwave sintered Sr_(1-x)La_xFe_(12-x)Ni_xO_(19)(x=0-0.35)hexaferrites used for nonreciprocal LTCF devices.J Mater Sci Mater Electron.2017;28:17816.
34.Amir Md, Gungunes H, Slimani Y, Tashkandi N, El Sayed HS, Aldakheel F, et al.Mossbauer studies and magnetic properties of cubic CuFe_2O_4 nanoparticles.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4733-5.
35.Korkmaz AD, Güner S, Slimani Y, Gungunes H, Amir Md, Manikandan A, et al.Micro structural, optical and magnetic properties of vanadium substituted nickel spinel nano-ferrites.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4793-6.
36.Slimani Y, Güngünes H, Nawaz M, Manikandan A, El Sayed HS, Almessiere MA,et al.Magneto-optical and microstructural properties of spinel cubic copper ferrites with Li-Al co-substitution.Ceram Int.2018;44:14242.
37.Almessiere MA, Slimani Y, Baykal A.Structural, morphological and magnetic properties of hard/soft SrFe_(12-x)V_xO_(19)/(Ni_(0.5)Mn_(0.5)Fe_2O_4)_y nanocomposites:effect of vanadium substitution.J Alloys Compd.2018;767:966.
38.Almessiere MA, Slimani Y, Baykal A.Exchange spring magnetic behavior of Sr_(0.3)Ba_(0.4)Pb_(0.3)Fe_(12)O_(19)/(CuFe_2O_4)_x nanocomposites fabricated by a one-pot citrate sol-gel combustion method.J Alloys Compd.2018;762:389.
39.Topkaya R, Akman(O|¨), Kazan S, Aktas B, Durmus Z, Baykal A.Surface spin disorder and spin-glass-like behaviour in manganese-substituted cobalt ferrite nanoparticles.J Nanoparticle Res.2012;14:1.
40.Kurtan U, Topkaya R, Baykal A, Toprak M.Temperature dependent magnetic properties of CoFe_2O_4/CTAB nanocomposite synthesized by sol-gel autocombustion technique.Ceram Int.2013;39:6551.
41.Topkaya R.Effect of Zn substitution on temperature dependent magnetic properties of BaFe_(12)O_(19)hexaferrites.J Alloys Compd.2017;725:1230.
42.Topkaya R, Auwal I, Baykal A.Effect of temperature on magnetic properties of BaY_xFe_(12-x)O_(19)hexaferrites.Ceram Int.2016;42:16296.
43.Almessiere MA, Slimani Y, El Sayed HS, Baykal A, Ercan I.Microstructural and magnetic investigation of vanadium-substituted Sr-nanohexaferrite.J Magn Magn Mater.2019;471:124.
44.Almessiere MA, Slimani Y, El Sayed HS, Baykal A, Ali S, Ercan I.Investigation of microstructural and magnetic properties of BaV_xFe_(12-x)O_(19)nanohexaferrites.J Supercond Nov Magnetism; 2018.https://doi.org/10.1007/s10948-018-4856-8.
45.Slimani Y, Baykal A, Amir Md, Tashkandi N, Güngünes H, Guner S, et al.Substitution effect of Cr~(3+)on hyperfine interactions, magnetic and optical properties of Sr-hexaferrites.Ceram Int.2018;44:15995.
46.Srinath S, Kumar MM, Sahner K, Post ML, Wickles M, Moos R, et al.Magnetization in insulating phases of Ti~(4+)doped SrFeO_(3-δ).J Appl Phys.2006;99,08S904.
47.Peddis D, Cannas C, Piccaluga G, Agostinelli E, Fiorani D.Surface spin freezing effects on enhanced saturation magnetization and magnetic anisotropy in CoFe_2O_4 nanoparticles.Nanotechnology.2010;21:125705.
48.Chen X, Bedanta S, Petracic O, Kleemann W, Sahoo S, Cardoso S, et al.Superparamagnetism versus superspin glass behavior in dilute magnetic nanoparticle systems.Phys Rev B.2005;72:214436.
49.Slimani Y, Almessiere MA, Baykal A.AC susceptibility study of Cu substituted BaFe_(12)O_(19)nanohexaferrites.Ceram Int.2018;44:13097.
50.Slimani Y, Baykal A, Manikandan A.Effect of Cr~(3+)substitution on AC susceptibility of Ba hexaferrite nanoparticles.J Magn Magn Mater.2018;458:204.
51.Almessiere MA, Slimani Y, Güngünes H, El Sayed HS, Baykal A.AC susceptibility and hyperfine interactions of vanadium substituted barium nanohexaferrites.Ceram Int.2018;44:17749.