HEAT CAPACITY OF MN(CH2COO)2.4H2O BETWEEN 0.4 AND 20 DEGREES K

被引：18

作者：

SCHELLENG, JH

RAQUET, CA

FRIEDBERG, SA

机构：

[1] Department of Physics, Carnegie-Mellon University, Pittsburgh

[2] U.S. Naval Research Laboratory, Washington

[3] Lewis Research Center, NASA, Cleveland

来源：

PHYSICAL REVIEW | 1968年 / 176卷 / 02期

关键词：

D O I：

10.1103/PhysRev.176.708

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The heat capacity Cp of powdered specimens of Mn(CH3COO)2•4H2O has been measured between 0.4 and 20°K in two vacuum calorimeters, one of which was cooled with liquid He3. A sharp λ-like anomaly occurs at 3.18°K, the magnetic ordering temperature. The behavior of this peak upon application of a magnetic field supports the conclusion that the ordered phase is ferrimagnetic. Near 0.7°K, Cp exhibits a rounded anomalous maximum of the Schottky type. This probably reflects the inequivalence of Mn++ ions within the unit cell. It is suggested that one group of Mn++ ions may interact only weakly with another group which are comparatively strongly coupled to one another. © 1968 The American Physical Society.

引用

页码：708 / +

页数：1

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