Magnetic properties of the UCoAl1-xGax intermetallic system

被引：15

作者：

Andreev, AV

Homma, Y

Shiokawa, Y

Sechovsky, V

机构：

[1] Charles Univ, Dept Met Phys, CR-12116 Prague 2, Czech Republic

[2] Tohoku Univ, Mat Res Inst, Sendai, Miyagi 98077, Japan

[3] Acad Sci Czech Republ, Inst Phys, CZ-18040 Prague 8, Czech Republic

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1998年 / 269卷 / 1-2期

关键词：

uranium intermetallics; metamagnetism; ferromagnetism;

D O I：

10.1016/S0925-8388(98)00143-1

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：

Results of structure and magnetization study of solid solutions UCoAl1-xGax are presented. The ZrNiAl-type structure of parent compounds persists over whole series and a rather weak concentration dependence of lattice parameters is observed. UCoAl is a paramagnet showing metamagnetism above 1 T at low temperatures. Substitution of Ga for Al leads to gradual evolution of spontaneous magnetic moment, which amounts to 0.63 mu(B) in UCoGa. This behaviour associated with the 5f moment formation and ordering is discussed in terms of varying U-U exchange interactions mediated by the anisotropic 5f ligand hybridization. (C) 1998 Elsevier Science S.A.

引用

页码：34 / 38

页数：5

共 22 条

[1]

Andreev A. V., 1985, Soviet Physics - Solid State, V27, P1145

[2]

Andreev A. V., 1984, Soviet Physics - JETP, V59, P1082

[3] MAGNETIC-PROPERTIES OF UGACO [J].

ANDREEV, AV ;

HAVELA, L ;

ZELENY, M ;

HREBIK, J .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1984, 82 (01) :191-194

[4] 5f band metamagnetism in UCoAl: Effects of alloying and pressure [J].

Andreev, AV ;

Havela, L ;

Sechovsky, V ;

Bartashevich, MI ;

Goto, T ;

Kamishima, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 169 (03) :229-239

[5] Effects of external pressure on the 5f-band metamagnetism in UCoAl [J].

Andreev, AV ;

Bartashevich, MI ;

Goto, T ;

Kamishima, K ;

Havela, L ;

Sechovsky, V .

PHYSICAL REVIEW B, 1997, 55 (09) :5847-5850

[6] Ferromagnetism in the UCo1-xRuxAl quasiternary intermetallics [J].

Andreev, AV ;

Havela, L ;

Sechovsky, V ;

Bartashevich, MI ;

Sebek, J ;

Dremov, RV ;

Kozlovskaya, IK .

PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1997, 75 (06) :827-844

[7] MAGNETIC-PROPERTIES OF UCO0.9T0.1AL (T=FE, NI, RU, PD) [J].

ANDREEV, AV ;

KATORI, HA ;

GOTO, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1995, 224 (01) :117-120

[8]

ANDREEV AV, 1990, PHYS MET METALLOGR, V69, P68

[9]

ANDREEV AV, IN PRESS ALLOYS COMP

[10] FRUSTRATION-INDUCED VANISHING OF MAGNETIC-MOMENTS IN RMN2 SYSTEMS [J].

BALLOU, R ;

LACROIX, C ;

REGUEIRO, MDN .

PHYSICAL REVIEW LETTERS, 1991, 66 (14) :1910-1913

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