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Mossbauer Effect. Applications to Magnetism

Journal Article · · Journal of Applied Physics
DOI:https://doi.org/10.1063/1.2000369· OSTI ID:4057510

The magnetic field at iron nuclei was determined in the ferromagnetic transition metals (Fe 3.42 x 105 gauss, Co 3.12 x 105 gauss, Ni 2.80 x 105 gauss at O deg K), but no hyperfine structure was observed down to 4 deg K in the antiferromagnetic transition metals, Mn and Cr. In the case of yttrium-iron garnet the fields at the iron atoms in the two types of sites were obtained (tetrahedral 3.9 x 105 gauss, octahedral 4.7 x 105 gauss). The most complete analysis so far was made in FeF2 where the magnetic field in the antiferromagnetic state (HT=O/ = 3.40 x 105 gauss) and the quadrupole splltting in the paramagnetlc state (31.2 Mc/sec) were obtained. Other materials under investigation are the iron oxides and some ferrites, where, for trivalent iron, fields in the vicinity of 5.0 x 105 gauss were found.

Research Organization:
Bell Telephone Labs., Inc., Murray Hill, N.J.
Sponsoring Organization:
USDOE
NSA Number:
NSA-15-014871
OSTI ID:
4057510
Journal Information:
Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 3 Vol. 32; ISSN JAPIAU; ISSN 0021-8979
Publisher:
American Institute of Physics (AIP)
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANTIFERROMAGNETISM
ATOMS
CHROMIUM
COBALT
FERRITES
FERROMAGNETIC MATERIALS
FERROMAGNETISM
HYPERFINE STRUCTURE
IRON
IRON FLUORIDES
IRON OXIDES
LOW TEMPERATURE
MAGNETIC FIELDS
MAGNETISM
MANGANESE
MOESSBAUER EFFECT
NICKEL
NUCLEAR MODELS
NUCLEI
QUADRUPOLES
QUANTITATIVE ANALYSIS
TRANSITION METALS
USES
YTTRIUM