THE MAGNETIC SUSCEPTIBILITIES OF SEVERAL PARAMAGNETIC SALTS AT LIQUID HE3 TEMPERATURES,
Abstract
A cryostat is described in which magnetic sus ceptibility measurements may be made by an audio frequency mutual induction technique at temperatures down to 0.35 K. Below 2 K the specimens are in direct contact with liquid He-3. Results of measurements on several com pounds are presented. The powder susceptibility of (Cr3(CH3C00)6(OH)2)C1.8H20 was found to obey a Curie-Weiss law and shows no evidence of inter cluster coupling. Both powdered Co(C2H3O2)2.4H20 and powdered Ni(C2H3O2)2.42O are observed to be paramagnetic to the lowest temperatures attained; the former salt does not exhibit the anomaly at 0.6 K found in earlier studies employing a magnetic cooling technique. The powder suscept ibility of Mn(CHO2)2.2H20 departs somewhat from Curis-Weiss behavior at these temperatures, but no evidence was found of a cooperative transition above 0.56 K. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 26, 1963
- Accession Number
- AD0412719
Entities
People
- J.t. Schriempf
- S.a. Friedberg
Organizations
- Carnegie Institute of Technology