Preparation and characterization of microcrack-free thick YBa2Cu3O7-δ films

稀有金属（英文版）, 2007, 26(5): 403-407.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

1.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

2.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

3.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

4.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

5.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

6.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

Preparation and characterization of microcrack-free thick YBa2Cu3O7-δ films

XIONG Jie ^1, , QIN Wenfeng ^2, , TANG Jinlong ^3, , TAO Bowan ^4, , CUI Xumei ^5, , LI Yanrong ^6,

1.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

2.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

3.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

4.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

5.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

6.State Key Lab of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China

Keywords： YBCO superconducting film

High quality epitaxial YBa2Cu3O7-δ (YBCO) superconducting films were fabricated on (00l) LaAlO3 substrates using the direct-current sputtering method. The attainment of an unusually high film thickness (up to 2.0 μm) without microcracking was attributed in part to the presence of pores correlated with yttrium-rich composition in the films. The influence of the film thickness on the microstructure was investigated by X-ray diffraction conventional scan (θ-2θ, ω-scan, pole figure) and high-resolution reciprocal space mapping. The films were c-axis oriented with no a-axis-oriented grains up to the thickness of 2 μm. The surface morphology and the critical current density (Jc) strongly depended on the film thickness.Furthermore, the reasons for these thickness dependences were elucidated in derail.

参考文献

[1]	Goyal A;Norton D P;Budai J D;Paranthaman M,Specht E.D,Kroeger D.M,Christen D.K,He Q,Saffian B,List F.A,Lee D.F,Martin P.M,Klabunde C.E,Hartfield E, Sikka V.K .High critical current density superconducting tapes by epitaxial deposition of YBa2Cu3Ox thick films on biaxially textured metals[J].Applied Physics Letters,1996,69:1795.
[2]	Wu X D;Foltyn S R;Arendt P N;Blumenthal W.R,Campbell I.H,Cotton J.D,Coulter J.Y,Hults W.L,Maley M.P,Safar H.F,Smith J.L .Properties of YBa2Cu3O7-δ thick films on flexible buffered metallic substrates[J].Applied Physics Letters,1995,67:2397.
[3]	Kang S;Goyal A;Li J;Gapud AA;Martin PM;Heatherly L;Thompson JR;Christen DK;List FA;Paranthaman M .High-performance high-T-c superconducting wires[J].Science,2006(5769):1911-1914.
[4]	Kim JW;Lee SY .Microwave property of YBCO film grown with two-step process[J].Physica, C. Superconductivity and its applications,2005(1/4):10-14.
[5]	Nurgaliev T.;Tsaneva VN.;Donchev TI.;Barber ZH.;Tarte EJ.;Blamire MG. Hogg M.;Evetts JE.;Taslakov M.;Miteva S.;Spasov AY.;Ovsyannikov G. Ivanov ZG.;Nilsson H. .Characterization of YBCO thin films for microwave applications[J].Physica, C. Superconductivity and its applications,2002(Pt.1):546-549.
[6]	Vassenden F;Linker G;Geerk J .Growth direction control YBCO thin films[J].Physica C,1991,175:566.
[7]	Hollmann E K;Plotkin D A;Razumov S V;Tumarkin A.V .Production of thick YBa2Cu3O7-δ films on sapphire with a cerium oxide sublayer[J].Technical Physics,1999,44:1119.
[8]	Kastner G.;Lorenz M.;Scholz R.;Zakharov ND.;Kopperschmidt P.;Hesse D. .MICROCRACKS OBSERVED IN EPITAXIAL THIN FILMS OF YBA2CU3O7-DELTA AND GDBA2CU3O7-DELTA[J].Physica Status Solidi, A. Applied Research,1995(1):381-394.
[9]	Zaitsev A G;Ockenfuss G;Wordenweber R.Critical thickness of YBCO films on CeO2 buffered sapphire[A].,1997:25.
[10]	Kastner G.;Schafer C.;Senz S.;Hesse D.;Lorenz M.;Hochmuth H.;Getta M.;Hein M.A.;Kaiser T.;Muller G. .Microstructure and microwave surface resistance of YBaCuO thinfilms[J].IEEE Transactions on Applied Superconductivity: A Publication of the IEEE Superconductivity Committee,1999(2):2171-2174.
[11]	Senapati K;Sahoo L K;Pandey N K;Budhani R.C .Irreversibility field and superconducting screening currents in EuBa2Cu3O7 films[J].Applied Physics Letters,2002,80:619.
[12]	Hasegawa K.;Shibata J.;Izumi T.;Shiohara Y.;Sugawara Y.;Hirayama T. Oba F.;Ikuhara Y. .Improvement of superconducting properties of SmBa2C3Oy films on MgO substrate by using BaZrO3 buffer layer[J].Physica, C. Superconductivity and its applications,2003(Pt.2):835-840.
[13]	Develos-Bagarinao K;Yamasaki H;Nakagawa Y;Endo K .Pore formation in YBCO films deposited by a large-area pulsed laser deposition system[J].Superconductor Science and Technology,2004,17:1253.
[14]	Develos-Bagarinao K;Yamasaki H;Nakagawa Y;Endo K .Relationship between composition and surface morphology in YBCO films deposited by large-area PLD[J].Physica, C. Superconductivity and its applications,2004(Pt.2):1286-1290.
[15]	Develos-Bagarinao K;Yamasaki H;Nie J C;Murugesan M,Obara H, Nakagawa Y .Control of porosity and composition in large-area YBCO films to achieve micrometer thickness and high J(c) on sapphire substrates[J].IEEE Transactions on Applied Superconductivity,2005,15:2962.
[16]	Siever S;Mattieis F;Krebs H U;Freyhardt H.C .Grain orientation in thick laser-deposited YBa2Cu3O7-δ films:Adjustment of c-axis orientation[J].Journal of Applied Physics,1994,78:5545.
[17]	Ignatiev A;Zhong Q;Chou PC;Zhang X;Liu JR;Chu WK .Large J(C) enhancement by ion irradiation for thick YBa2Cu3O7-delta films prepared by photoassisted metalorganic chemical vapor deposition[J].Applied physics letters,1997(11):1474-1476.
[18]	Foltyn S R;Jia Q X;Areudt P N;Kinder L,Fan Y, Smith J.F .Relationship between film thickness and the critical current of YBa2Cu3O7-delta coated conductors[J].Applied Physics Letters,1999,75:3692.

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Preparation and characterization of microcrack-free thick YBa2Cu3O7-δ films

参考文献