Superconducting YBa2Cu3O7-x thin films on polycrystalline ferrite for magnetically tunable microwave components

被引：14

作者：

Jia, QX

Findikoglu, AT

Arendt, P

Foltyn, SR

Roper, JM

Groves, JR

Coulter, JY

Li, YQ

Dionne, GF

机构：

[1] Univ Calif Los Alamos Natl Lab, Superconduct Technol Ctr, Los Alamos, NM 87545 USA

[2] NZ Appl Technol, Woburn, MA 01801 USA

[3] MIT, Lincoln Lab, Lexington, MA 02173 USA

来源：

APPLIED PHYSICS LETTERS | 1998年 / 72卷 / 14期

关键词：

D O I：

10.1063/1.121177

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Superconducting YBa2Cu2O7-x (YBCO) thin films with a surface resistance of 0.86 m Omega at 10 GHz and 76 K have been grown on polycrystalline ferrite yttrium iron garnet (YIG) substrates. The chemical and structural mismatches between YBCO and YIG are solved by using a double buffer layer of biaxially oriented yttria-stabilized zirconia (YSZ) and CeO2, when YSZ is deposited by an ion-beam-assisted-deposition technique. The YBCO films are c axis oriented with an in-plane mosaic spread [full width at half maximum of an x-ray phi-scan on (103) reflection] of less than 8 degrees. The films have a superconductive transition temperature above 88 K with a transition width less than 0.3 K, giving a critical current density above 10(6) A/cm(2) in self field at 75 K. At 75 K in an external magnetic field of 1 T perpendicular to the film surface, the films maintain a critical current density over 2 X 10(5) A/cm(2). (C) 1998 American Institute of Physics. [S0003-6951(98)02314-6].

引用

页码：1763 / 1765

页数：3

共 12 条

[1]

ARENDT P, 1994, MATER RES SOC SYMP P, V341, P209, DOI 10.1557/PROC-341-209

[2] Ferrite-superconductor devices for advanced microwave applications [J].