YBNIAL - A NEW YB-BASED HEAVY-FERMION ANTIFERROMAGNET

被引：33

作者：

SCHANK, C ^{[1
]}

OLESCH, G ^{[1
]}

KOHLER, J ^{[1
]}

TEGEL, U ^{[1
]}

KLINGER, U ^{[1
]}

DIEHL, J ^{[1
]}

KLIMM, S ^{[1
]}

SPARN, G ^{[1
]}

HORN, S ^{[1
]}

GEIBEL, C ^{[1
]}

STEGLICH, F ^{[1
]}

机构：

[1] UNIV AUGSBURG,LEHRSTUHL EXPTL PHYS 2,D-86135 AUGSBURG,GERMANY

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1995年 / 140卷 / pt 2期

关键词：

Antiferromagnetism - Calorimetry - Crystal structure - Crystallization - Electric conductivity measurement - Entropy - Magnetic permeability measurement - Magnetization - Phase transitions - Specific heat - X ray diffraction - Ytterbium compounds;

D O I：

10.1016/0304-8853(94)01423-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the compound YbNiAl, which crystallizes in the same structure as the well-known mixed-valent system YbCuAl, and have found that it is the first example of a clear cut Yb-based heavy-fermion antiferromagnet. The resistivity increases logarithmically by 25% between 100 and 10 K, C/T extrapolates below 0.4 K to a gamma value of 350 mJ/K-2 mol and the entropy at the antiferromagnetic ordering temperature T-N = 3 K reaches only 0.45R In 2. We compare the properties of this compound with those of YbPtAl, where Yb is trivalent.

引用

页码：1237 / 1238

页数：2