EFFECT OF PRESSURE ON THE THERMAL-EXPANSION COEFFICIENT IN CENISN

被引：8

作者：

UWATOKO, Y ^{[1
]}

OOMI, G ^{[1
]}

TAKABATAKE, T ^{[1
]}

FUJII, H ^{[1
]}

机构：

[1] HIROSHIMA UNIV, FAC INTEGRATED ARTS & SCI, HIROSHIMA 730, JAPAN

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1992年 / 104卷

关键词：

D O I：

10.1016/0304-8853(92)90963-O

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thermal expansion coefficient of CeNiSn single-crystal has been measured up to 8 kbar in the temperature range from 4.2 to 300 K. The thermal expansion coefficients alpha(i) (i = a, b and c) of CeNiSn are highly anisotropic. Around T = 50 K, we observed extremely mysterious anomaly in the alpha(i)(T) at 1 bar, which disappears at 8 kbar. Both alpha(a) and alpha(b) at 1 bar sharply decrease below 7 K, which originates in the opening of an anisotropic energy gap. However, this anomaly also disappears at 8 kbar.

引用

页码：643 / 644

页数：2

共 10 条

[1]

ALIEV FG, IN PRESS PHYSICA B

[2] THERMAL-EXPANSION OF SOLIDS AT LOW-TEMPERATURES [J].

BARRON, THK ;

COLLINS, JG ;

WHITE, GK .

ADVANCES IN PHYSICS, 1980, 29 (04) :609-730

[3]

KAGAYAMA T, UNPUB J PHYS SOC JPN

[4] GAP SUPPRESSION IN CENISN UNDER HYDROSTATIC-PRESSURE [J].

KURISU, M ;

TAKABATAKE, T ;

FUJIWARA, H .

SOLID STATE COMMUNICATIONS, 1988, 68 (07) :595-597

[5] ANISOTROPIC THERMAL-EXPANSION OF HEAVY FERMION MATERIAL CECU6 [J].

OOMI, G ;

ONUKI, Y ;

KOMATSUBARA, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (03) :803-806

[6] HEAVY-FERMION SYSTEMS [J].

STEWART, GR .

REVIEWS OF MODERN PHYSICS, 1984, 56 (04) :755-787

[7] FORMATION OF AN ANISOTROPIC ENERGY-GAP IN THE VALENCE-FLUCTUATING SYSTEM CENISN [J].

TAKABATAKE, T ;

TESHIMA, F ;

FUJII, H ;

NISHIGORI, S ;

SUZUKI, T ;

FUJITA, T ;

YAMAGUCHI, Y ;

SAKURAI, J ;

JACCARD, D .

PHYSICAL REVIEW B, 1990, 41 (13) :9607-9610

[8]

TAKABATAKE T, IN PRESS PHYS REV B

[9] THERMAL-EXPANSION COEFFICIENTS OF CECU2 AND YCU2 SINGLE-CRYSTALS [J].

UWATOKO, Y ;

OKITA, H ;

OOMI, G ;

UMEHARA, I ;

ONUKI, Y .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1990, 59 (10) :3443-3446

[10]

UWATOKO Y, 1991, J JPN I MET, P135

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