Magnetic ordering in EuB6, investigated by neutron diffraction

被引：32

作者：

Henggeler, W ^{[1
]}

Ott, HR

Young, DP

Fisk, Z

机构：

[1] ETH Zurich, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] ETH Honggerberg, Festkorperphys Lab, CH-8093 Zurich, Switzerland

[4] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

来源：

SOLID STATE COMMUNICATIONS | 1998年 / 108卷 / 12期

关键词：

magnetically ordered materials; phase transitions; neutron scattering;

D O I：

10.1016/S0038-1098(98)00470-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An elastic neutron scattering study of the temperature-dependence of the ordered magnetic moment in EuB6 is presented. The decrease of the saturation magnetization of similar to 7 mu(B) with increasing temperature is shown to follow the Bloch T-3/2-law, with no indication of a spin-gap behavior. The magnetic coupling constant deduced from the Bloch law fit corresponds to a mean-field ordering temperature of similar to 12 K, close to the actually observed ordering temperature and the paramagnetic Curie-temperature deduced from high-temperature magnetic susceptibility. (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：929 / 932

页数：4

共 13 条

[1] Electron-tunneling studies of the hexaboride materials SmB6, EuB6, CeB6, and SrB6 [J].

Amsler, B ;

Fisk, Z ;

Sarrao, JL ;

von Molnar, S ;

Meisel, MW ;

Sharifi, F .

PHYSICAL REVIEW B, 1998, 57 (15) :8747-8750

[2] High pressures and ferromagnetic order in EuB6 [J].

Cooley, JC ;

Aronson, MC ;

Sarrao, JL ;

Fisk, Z .

PHYSICAL REVIEW B, 1997, 56 (22) :14541-14546

[3] Low-temperature anomalies and ferromagnetism of EuB6 [J].

Degiorgi, L ;

Felder, E ;

Ott, HR ;

Sarrao, JL ;

Fisk, Z .

PHYSICAL REVIEW LETTERS, 1997, 79 (25) :5134-5137

[4] MAGNETIC, TRANSPORT, AND THERMAL-PROPERTIES OF FERROMAGNETIC EUB6 [J].

FISK, Z ;

JOHNSTON, DC ;

CORNUT, B ;

MOLNAR, SV ;

OSEROFF, S ;

CALVO, R .

JOURNAL OF APPLIED PHYSICS, 1979, 50 (03) :1911-1913

[5] CHARGE TRANSPORT AND PRESSURE-DEPENDENCE OF TC OF SINGLE-CRYSTAL, FERROMAGNETIC EUB6. [J].

GUY, CN ;

MOLNAR, SV ;

ETOURNEAU, J ;

FISK, Z .

SOLID STATE COMMUNICATIONS, 1980, 33 (10) :1055-1058

[6]

KEFFER F, 1966, ENCYCL PHYS, V18, P107

[7]

Massidda S, 1997, Z PHYS B CON MAT, V102, P83, DOI 10.1007/s002570050267

[8] SUPERCONDUCTIVITY AND ANTIFERROMAGNETISM IN BORON-RICH LATTICES [J].

MATTHIAS, BT ;

GEBALLE, TH ;

ANDRES, K ;

CORENZWIT, E ;

HULL, GW ;

MAITA, JP .

SCIENCE, 1968, 159 (3814) :530-+

[9] Spectroscopic study of bound magnetic polaron formation and the metal-semiconductor transition in EuB6 [J].

Nyhus, P ;

Yoon, S ;

Kauffman, M ;

Cooper, SL ;

Fisk, Z ;

Sarrao, J .

PHYSICAL REVIEW B, 1997, 56 (05) :2717-2721

[10] ANOMALOUS VARIATION OF OPTICAL-SPECTRA WITH SPIN POLARIZATION IN DOUBLE-EXCHANGE FERROMAGNET - LA1-XSRXMNO3 [J].

OKIMOTO, Y ;

KATSUFUJI, T ;

ISHIKAWA, T ;

URUSHIBARA, A ;

ARIMA, T ;

TOKURA, Y .

PHYSICAL REVIEW LETTERS, 1995, 75 (01) :109-112

← 1 2 →