无氟MOD法制备YBCO超导薄膜工艺中物相的演变过程
|
摘要
第二代高温超导带材在电力系统和磁体领域拥有良好的应用前景,无氟金属有机盐沉积技术(FF-MOD)以其设备成本低、晶体生长速率快、环境友好等特点,成为研究热点。本研究通过FF-MOD技术,在铝酸镧单晶和CeO_2/IBAD-MgO/Y_2O_3/Al_2O_3/HastelloyC276人工基板上制备得到钇钡铜氧(YBCO)薄膜,并对不同制备温度下的样品进行淬火,随后对淬火样品进行了X射线衍射、扫描电子显微镜和衰减全反射红外光谱的表征,系统地研究了高温成相过程中BaCO_3和YBCO的相演变过程。实验结果表明,在YBCO成相过程中,BaCO_3不会与Y、Cu元素的氧化物反应直接生成YBCO晶体,并生成的YBCO相晶体先呈随机取向,然后在热处理的过程中(800℃左右)逐渐转化为具有双轴织构的YBCO晶体。
The second generation of high temperature superconducting tape is considered to be a promising material for future power and magnet applications. Among the fabrication processes, Fluorine Free-Metal Organic Deposition(FF-MOD) method has received much attention in recent years because of its low equipment requirements, high crystal growth rate, and environmental friendliness. In present study, yttrium barium copper oxide(YBCO) films were prepared on the LAO single crystals and CeO_2/IBAD-MgO/Y_2O_3/Al_2O_3/Hastelloy C276 technical substrates by the FF-MOD technique. The samples were quenched at different temperatures and then characterized by X-ray diffraction, scanning electron microscope and ATR-FT-IR to inveitigate the phase evolution process of YBCO and BaCO_3. The results demonstrate that YBCO crystal does not formed directly by reaction between BaCO_3 and Y/Cu oxides. And the formed YBCO crystals are randomly oriented at first, and then gradually convert into the biaxially textured structure during the heat treatment process at about 800℃.
The second generation of high temperature superconducting tape is considered to be a promising material for future power and magnet applications. Among the fabrication processes, Fluorine Free-Metal Organic Deposition(FF-MOD) method has received much attention in recent years because of its low equipment requirements, high crystal growth rate, and environmental friendliness. In present study, yttrium barium copper oxide(YBCO) films were prepared on the LAO single crystals and CeO_2/IBAD-MgO/Y_2O_3/Al_2O_3/Hastelloy C276 technical substrates by the FF-MOD technique. The samples were quenched at different temperatures and then characterized by X-ray diffraction, scanning electron microscope and ATR-FT-IR to inveitigate the phase evolution process of YBCO and BaCO_3. The results demonstrate that YBCO crystal does not formed directly by reaction between BaCO_3 and Y/Cu oxides. And the formed YBCO crystals are randomly oriented at first, and then gradually convert into the biaxially textured structure during the heat treatment process at about 800℃.
引文
[1]VAN DER LAAN D C,EKIN J W.Dependence of the critical current of YBa2Cu3O7-δcoated conductors on in-plane bending.Superconductor Science and Technology,2008,21:115002–1–6.
[2]LAAN D C V D,EKIN J W,CLICKNER C C,et al.Delamination strength of YBCO coated conductors under transverse tensile stress.Superconductor Science and Technology,2007,20(8):765–770.
[3]HAO CENGCENG,TANG YUEJIN,JIAO SHUNFENG,et al.Critical current of HTS tape under tensile stress.Cryogenics&Superconductivity,2013,41(6):17–21.
[4]NASUI M,PETRISOR T,MOS R B,et al.Fluorine-free propionate route for the chemical solution deposition of YBa2Cu3O7-xsuperconducting films.Ceramics International,2015,41(3):4416–4421.
[5]ZHAO YUE,TANG XIAO,WU WEI,et al.Influence of substratefilm reactions on YBCO grown by fluorine-free MOD route.IEEE Transactions on Applied Superconductivity,2017,27:1–4.
[6]PARMIGIANI F,CHIARELLO G,RIPAMONTI N.et al.Observation of carboxylic groups in the lattice of sintered Ba2YCu3O7-yhigh-Tc superconductors.Physical Review B,1987,36(13):7148–7150.
[7]KUMAGAI T M T,YAMAGUCHI I,KONDO W,et al.Preparation of 2-inch-diameter double-sided YBa2Cu3O7 films by coatingpyrolysis process.Physica C:Superconductivity,2001,357–360(2):1346–1349.
[8]GUPTA A,JAGANNATHAN R,COOPER E I,et al.Superconducting oxide films with high transition temperature prepared from metal trifluoroacetate precursors.Applied Physics Letters,1988,52(24):2077–2079.
[9]SRIVATSAN SATHYAMURTHY C T A M W R.Materials Research for Manufacturing.Springer Series in Materials Science,2016,224:36.
[10]SHI DONGLU,XU YONGLI,YAO HAIBO,et al.The development of Y Ba2Cu3Ox thin films using a fluorine-free Sol-Gel approach for coated conductors.Superconductor Science and Technology,2004,17(12):1420–1425.
[11]WU WEI,FENG FENG,SHI KAI,et al.A rapid process of YBa2Cu3O7-δthin film fabrication using trifluoroacetate metal-organic deposition with polyethylene glycol additive.Superconductor Science and Technology,2013,26(5):055013–1–10.
[12]WU WEI,FENG FENG,ZHAO YUE,et al.A low-fluorine solution with a 2:1 F/Ba mole ratio for the fabrication of YBCO films.Superconductor Science and Technology,2014,27(5):055006–1–10.
[13]TANG XIAO,SUO HONGLI,YE SHUAI,et al.Rapid synthesis of YBCO thick superconducting films by low fluorine TFA-MOD method.Journal of Inorganic Materials,2010,25(9):971–974.
[14]LLORDéS A,ZALAMOVA K,RICART S,et al.Evolution of metal-trifluoroacetate precursors in the thermal decomposition toward high-performance YBa2Cu3O7 superconducting films.Chemistry of Materials,2010,22(5):1686–1694.
[15]MA A T H A X L,K YAMAGIWA B,HIRABAYASHI B I,et al.Microstructure characterization of YBa2Cu3O7–y thin film derived from the metal(Y,Ba,and Cu)naphthenates gels coated on the Sr Ti O3(100)substrate.Physica C:Superconductivity,1998,306(3/4):245-252.
[16]MATSUI H,TSUKADA K,TSUCHIYA T,et al.Reduced crystallization time of YBCO in a fluorine-free MOD process using UV-lamp irradiation.Physica C:Superconductivity and its Applications,2011,471(21/22):960–962.
[17]TANG XIAO,ZHAO YUE,WU WEI,et al.High-Jc YBa2Cu3O7-x-Ag superconducting thin films synthesized through a fluorine-free MOD method.Journal of the European Ceramic Society,2015,35(6):1761–1769.
[18]ZHAO YUE,P TORRES,TANG XIAO,et al.Growth of highly epitaxial YBa2Cu3O(7–δ)films from a simple propionate-based solution.Inorganic Chemistry,2015,54(21):10232–1–8.
[19]XU YONGLI.High Jc Epitaxial YBa2Cu3O7–δFilms through a Non-fluorine Approach for Coated Conductor Applications.Cincinnati:University of Cincinnati,Doctor dissertation,2003.
[20]VERMEIR P,CARDINAEL I,SCHAUBROECK J,et al.Elucidation of the mechanism in fluorine-free prepared YBa2Cu3O(7–δ)coatings.Inorganic Chemistry,2010,49:4471–4477.
[21]EATOUGH M O,GINLEY D S,MOROSIN B,et al.Orthorhombictetragonal phase transition in high-temperature superconductor YBa2Cu3O7.Applied Physics Letters,1987,51(5):367–368.
[22]ZHAO YUE,TANG XIAO,WU WEI,et al.Influence of substratefilm reactions on YBCO grown by fluorine-free MOD route.IEEE Transactions on Applied Superconductivity,2017,27(4):6600304–1–4.
[2]LAAN D C V D,EKIN J W,CLICKNER C C,et al.Delamination strength of YBCO coated conductors under transverse tensile stress.Superconductor Science and Technology,2007,20(8):765–770.
[3]HAO CENGCENG,TANG YUEJIN,JIAO SHUNFENG,et al.Critical current of HTS tape under tensile stress.Cryogenics&Superconductivity,2013,41(6):17–21.
[4]NASUI M,PETRISOR T,MOS R B,et al.Fluorine-free propionate route for the chemical solution deposition of YBa2Cu3O7-xsuperconducting films.Ceramics International,2015,41(3):4416–4421.
[5]ZHAO YUE,TANG XIAO,WU WEI,et al.Influence of substratefilm reactions on YBCO grown by fluorine-free MOD route.IEEE Transactions on Applied Superconductivity,2017,27:1–4.
[6]PARMIGIANI F,CHIARELLO G,RIPAMONTI N.et al.Observation of carboxylic groups in the lattice of sintered Ba2YCu3O7-yhigh-Tc superconductors.Physical Review B,1987,36(13):7148–7150.
[7]KUMAGAI T M T,YAMAGUCHI I,KONDO W,et al.Preparation of 2-inch-diameter double-sided YBa2Cu3O7 films by coatingpyrolysis process.Physica C:Superconductivity,2001,357–360(2):1346–1349.
[8]GUPTA A,JAGANNATHAN R,COOPER E I,et al.Superconducting oxide films with high transition temperature prepared from metal trifluoroacetate precursors.Applied Physics Letters,1988,52(24):2077–2079.
[9]SRIVATSAN SATHYAMURTHY C T A M W R.Materials Research for Manufacturing.Springer Series in Materials Science,2016,224:36.
[10]SHI DONGLU,XU YONGLI,YAO HAIBO,et al.The development of Y Ba2Cu3Ox thin films using a fluorine-free Sol-Gel approach for coated conductors.Superconductor Science and Technology,2004,17(12):1420–1425.
[11]WU WEI,FENG FENG,SHI KAI,et al.A rapid process of YBa2Cu3O7-δthin film fabrication using trifluoroacetate metal-organic deposition with polyethylene glycol additive.Superconductor Science and Technology,2013,26(5):055013–1–10.
[12]WU WEI,FENG FENG,ZHAO YUE,et al.A low-fluorine solution with a 2:1 F/Ba mole ratio for the fabrication of YBCO films.Superconductor Science and Technology,2014,27(5):055006–1–10.
[13]TANG XIAO,SUO HONGLI,YE SHUAI,et al.Rapid synthesis of YBCO thick superconducting films by low fluorine TFA-MOD method.Journal of Inorganic Materials,2010,25(9):971–974.
[14]LLORDéS A,ZALAMOVA K,RICART S,et al.Evolution of metal-trifluoroacetate precursors in the thermal decomposition toward high-performance YBa2Cu3O7 superconducting films.Chemistry of Materials,2010,22(5):1686–1694.
[15]MA A T H A X L,K YAMAGIWA B,HIRABAYASHI B I,et al.Microstructure characterization of YBa2Cu3O7–y thin film derived from the metal(Y,Ba,and Cu)naphthenates gels coated on the Sr Ti O3(100)substrate.Physica C:Superconductivity,1998,306(3/4):245-252.
[16]MATSUI H,TSUKADA K,TSUCHIYA T,et al.Reduced crystallization time of YBCO in a fluorine-free MOD process using UV-lamp irradiation.Physica C:Superconductivity and its Applications,2011,471(21/22):960–962.
[17]TANG XIAO,ZHAO YUE,WU WEI,et al.High-Jc YBa2Cu3O7-x-Ag superconducting thin films synthesized through a fluorine-free MOD method.Journal of the European Ceramic Society,2015,35(6):1761–1769.
[18]ZHAO YUE,P TORRES,TANG XIAO,et al.Growth of highly epitaxial YBa2Cu3O(7–δ)films from a simple propionate-based solution.Inorganic Chemistry,2015,54(21):10232–1–8.
[19]XU YONGLI.High Jc Epitaxial YBa2Cu3O7–δFilms through a Non-fluorine Approach for Coated Conductor Applications.Cincinnati:University of Cincinnati,Doctor dissertation,2003.
[20]VERMEIR P,CARDINAEL I,SCHAUBROECK J,et al.Elucidation of the mechanism in fluorine-free prepared YBa2Cu3O(7–δ)coatings.Inorganic Chemistry,2010,49:4471–4477.
[21]EATOUGH M O,GINLEY D S,MOROSIN B,et al.Orthorhombictetragonal phase transition in high-temperature superconductor YBa2Cu3O7.Applied Physics Letters,1987,51(5):367–368.
[22]ZHAO YUE,TANG XIAO,WU WEI,et al.Influence of substratefilm reactions on YBCO grown by fluorine-free MOD route.IEEE Transactions on Applied Superconductivity,2017,27(4):6600304–1–4.