Synthesis of Rare Earth Compounds and Study of Their Magnetic Optical and Semiconducting Properties
Abstract
The authors describe transport measurements on the magnetic semiconductor Gd(3-x)v(x)S4. Some of the ideas relating to electrons localized by coulombic disorder to include potential fluctuations of magnetic origin are discussed. Also discussed are the effects on magnetic exchange of conduction electrons donated by non magnetic La(+++) ions to the Van Vleck ion Sm(++) in SmS. In spite of the fact that Sm(++) has a non magnetic ground state it has a sizeable susceptibility since its magnetic properties are determined by higher lying multiplet states. The principles of the susceptibility measurement are described as well as a technique for accounting for paramagnetic impurity contributions to chi sub M. The final section is concerned with a study of layer type transition metal dichalcogenides. The authors describe the low temperature intercalation of europium in MoS2 and show that ytterbium and strontium can also be intercalated. The magnetic properties of the three intercalated systems are compared.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1973
- Accession Number
- AD0755925
Entities
People
- F. Hotzberg
- L. J. Tao
- Michael W. Shafer
- S. Von Molnar
- T. Penney
Organizations
- IBM Thomas J. Watson Research Center