Effect of oxygen content on pinning in Bi2Sr2CaCu2O8+y epitaxial films

被引：1

作者：

Camarota, B. ^{[1
]}

Fiorani, D. ^{[1
]}

Testa, A. M. ^{[2
]}

Balestrino, G. ^{[3
]}

Milani, E. ^{[3
]}

Livanov, D. V. ^{[3
]}

机构：

[1] CNR, ICMAT, Area Ric Roma Monterotondo Staz, I-00185 Rome, Italy

[2] Univ Salerno, Dept Phys, Salerno, Italy

[3] Univ Roma Tor Vergata, Dept Mech Engn, I-00173 Rome, Italy

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235-40卷

关键词：

D O I：

10.1016/0921-4534(94)90938-5

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of oxidizing and reducing thermal treatments on the pinning properties of epitaxial Bi2Sr2CaCu2O8+y thin films have been investigated by DC magnetic measurements. With decreasing the oxygen content the critical temperature increases, but the critical current and the pinning energy decrease. The experimental ( H -T) irreversibility line can be fitted within the current theories on the vortex lattice melting using different values of the anisotropy parameter gamma for the different degrees of oxidation.

引用

页码：2823 / 2824

页数：2

共 5 条

[1] EFFECTS OF REDUCING AND OXIDIZING THERMAL TREATMENTS ON THE TRANSPORT CRITICAL CURRENT-DENSITY IN EPITAXIAL BI2SR3-XCAXCU2O8+Y FILMS [J].

BALESTRINO, G ;

MARINELLI, M ;

MILANI, E ;

PAOLETTI, A ;

PAROLI, P .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (08) :3903-3905

[2] OXYGEN STOICHIOMETRY, CRITICAL-TEMPERATURE AND PINNING MECHANISMS IN THE 2212 BSCCO SUPERCONDUCTOR [J].

GONZALEZCALBET, JM ;

BADIA, A ;

VALLETREGI, M ;

CANEIRO, A ;

RAMIREZ, J ;

RILLO, C ;

LERA, F ;

NAVARRO, R .

PHYSICA C, 1992, 203 (1-2) :223-230

[3]

Gyorgy E., 1990, APPL PHYS LETT, V57, P94

[4] FLUX LATTICE MELTING IN HIGH-TC SUPERCONDUCTORS [J].

HOUGHTON, A ;

PELCOVITS, RA ;

SUDBO, A .

PHYSICAL REVIEW B, 1989, 40 (10) :6763-6770

[5] GROWTH AND PROPERTIES OF OXYGEN-DOPED AND ION-DOPED BI2SR2CACU2O8+DELTA SINGLE-CRYSTALS [J].

MITZI, DB ;

LOMBARDO, LW ;

KAPITULNIK, A ;

LADERMAN, SS ;

JACOWITZ, RD .

PHYSICAL REVIEW B, 1990, 41 (10) :6564-6574

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