Changeover in the order of the magnetic phase transition in the intermetallic compounds (Er1-xTbx)Co2

被引：20

作者：

Garcia, F ^{[1
]}

Soares, MR ^{[1
]}

Takeuchi, AY ^{[1
]}

da Cunha, SF ^{[1
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, RJ, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 279卷 / 02期

关键词：

spin fluctuations; metamagnetism; intermetallic compounds; first-order magnetic phase transition;

D O I：

10.1016/S0925-8388(97)00618-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Electrical resistivity, magnetization and AC susceptibility measurements have been carried out to investigate the order of the magnetic phase transition in (Er1-xTbx)Co-2 compounds. In this system a changeover from first- to second-order transition at about x(c)=0.60 was observed. This result is discussed in the framework of the generalized Inoue-Shimizu phenomenological model. Moreover, a microscope explanation about the order of the phase transition in terms of spin fluctuation and metamagnetism of the Co-3d subsystem is offered. (C) 1998 Elsevier Science S.A. All rights reserved.

引用

页码：117 / 122

页数：6

共 22 条

[1]

BARANOV N, 1993, PHYSICS TRANSITION M, P370

[2]

Baranov N. V., 1989, Soviet Physics - JETP, V69, P382

[3] MAGNETIC STATE OF R(1-X)Y(X)CO(2) COMPOUNDS NEAR THE CRITICAL CONCENTRATION [J].

BARANOV, NV ;

PIROGOV, AN .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 217 (01) :31-37

[4] 1ST ORDER TRANSITIONS IN ACO2 COMPOUNDS [J].

BLOCH, D ;

EDWARDS, DM ;

SHIMIZU, M ;

VOIRON, J .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1975, 5 (06) :1217-1226

[5]

BROMMER PE, 1989, PHYSICA B, V154

[6]

Burzo E., 1972, International Journal of Magnetism, V3, P161

[7]

DASILVA MRS, IN PRESS J MAG MAGN

[8] ELECTRONIC AND MAGNETIC-PROPERTIES OF ERXY1-XCO2 COMPOUNDS [J].

DUC, NH ;

HIEN, TD ;

BROMMER, PE ;

FRANSE, JJM .

JOURNAL OF PHYSICS F-METAL PHYSICS, 1988, 18 (02) :275-294

[9] THE MAGNETIC PHASE-TRANSITIONS IN (TB, HO)CO2 AND (TB, Y)CO2 COMPOUNDS [J].

DUC, NH ;

HIEN, TD ;

MAI, PP ;

NGAN, NHK ;

SINH, NH ;

BROMMER, PE ;

FRANSE, JJM .

PHYSICA B-CONDENSED MATTER, 1989, 160 (02) :199-203

[10]

DUC NH, 1994, J MAGN MAGN MATER, V131, P224, DOI 10.1016/0304-8853(94)90032-9

← 1 2 3 →