Synthesis and characterization of new copper-deficient spin-glass compounds La1.85Sr0.15Cu1-εO4+δ

被引：7

作者：

Lisboa, PN

Zanetti, SM

Leite, ER

Ortiz, WA

机构：

[1] Univ Fed Sao Carlos, Dept Quim UFSCar, Lab Interdisciplinar Eletroquim & Ceram, BR-13565905 Sao Carlos, SP, Brazil

[2] Univ Fed Sao Carlos, Dept Fis, Grp Supercondutividade & Magnetismo, BR-13565905 Sao Carlos, SP, Brazil

来源：

MATERIALS LETTERS | 1999年 / 38卷 / 04期

基金：

巴西圣保罗研究基金会;

关键词：

sol-gel processing; magnetic phase diagram; spin-glass behavior; La1.85Sn0.15Cu1-epsilon O4+delta;

D O I：

10.1016/S0167-577X(98)00176-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work we report the synthesis of a new family of copper deficient spin-glass compounds, La1.85Sr0.15Cu1-deltaO4+delta. Ceramic samples were prepared by a modified sol-gel technique and phase evolution was followed by X-ray diffraction. Inductively Coupled Plasma Spectrometry and Atomic Absorption Spectrophotometry were used to study the sample stoichiometry. The magnetic response includes all characteristics features of spin-glasses. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：289 / 293

页数：5

共 20 条

[1] POSSIBLE HIGH-TC SUPERCONDUCTIVITY IN THE BA-LA-CU-O SYSTEM [J].

BEDNORZ, JG ;

MULLER, KA .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1986, 64 (02) :189-193

[2] SPIN-GLASSES - EXPERIMENTAL FACTS, THEORETICAL CONCEPTS, AND OPEN QUESTIONS [J].

BINDER, K ;

YOUNG, AP .

REVIEWS OF MODERN PHYSICS, 1986, 58 (04) :801-976

[3] Oxygen dependence on superconducting properties of La1.85Sr0.15CuO4-δ ceramic and crystal samples [J].

Buffeteau, B ;

Hargreaves, T ;

Grevin, B ;

Marin, C .

PHYSICA C, 1998, 294 (1-2) :55-70

[4]

CANELLA V, 1971, J APPL PHYS, V42, P1689

[5] SPIN-GLASS BEHAVIOR IN LA1.96SR0.04CUO4 [J].

CHOU, FC ;

BELK, NR ;

KASTNER, MA ;

BIRGENEAU, RJ ;

AHARONY, A .

PHYSICAL REVIEW LETTERS, 1995, 75 (11) :2204-2207

[6]

CHU CT, 1987, J AM CERAM SOC, V70, P375

[7] Magnetic susceptibility of Fe/Cu multilayers: Ferromagnetic, antiferromagnetic, and spin-glass phases [J].

de Oliveira, AJA ;

Ortiz, WA ;

Mosca, DH ;

Mattoso, N ;

Schreiner, WH ;

Teixeira, SR .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :7372-7374

[8]

DEOLIVEIRA AJA, 1998, IN PRESS P 4 LAT AM

[9]

GALKIN VY, IN PRESS J APPL PHYS

[10]

GALKIN VY, IN PRESS J MAGN MAG

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