COOLING OF AN ANTIFERROMAGNET BY ADIABATIC MAGNETIZATION
Abstract
The heat capacity of powdered MnBr2.4 H2O has been measured between 1.4 and 20 K in applied magnetic fields up to 24 K oe. The shift of the Neel point to lower temperatures with increasing field has been observed. A series of adiabatic magnetization measurements from initial temperatures above and below the zero field Neel point (TN(O) = 2.13 K) has been carried out. For Ti < TN(O) the anticipated cooling effect is observed for applied fields smaller than that required to make the salt paramagnetic. Adiabatic data have been used to locate the curves of entropy vs. temperature computed from the heat capacity relative to the curve for H = O. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1962
- Accession Number
- AD0290788
Entities
People
- J.h. Schelleng
- S.a. Friedberg
Organizations
- Carnegie Institute of Technology