Studies of Magnetic Properties in Rare Earth Alloys at Cryogenic Temperatures.

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Abstract:

The research contributes to an understanding of the interactions responsible for the magnetic behavior of rare earth alloys on the atomic level as an essential step in correlating the basic interactions with the bulk properties of such alloys. Nuclear hyperfine magnetic NHM and quadrupolar NHQ interaction studies were performed using the 161Dy Mossbauer resonance in the magnetic system DyxGd1-x. The NHM and NHQ interactions were measured as a function of concentration and temperature up to the Neel Curie points. The data for internal field strengths are compared to existing molecular field and spin-wave theories. Modified author abstract

Author(s):
Segnan, Romeo ; Sweger, Daniel M.
Author Organization(s):
AMERICAN UNIV WASHINGTON D C DEPT OF PHYSICS
Descriptive Note:
Interim technical rept. Dec 69-Dec 72,
Pagination:
0097

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Contract/Grant Number(s):
DAAK02-70-C-0102
Task Number(s):
1T662705A01204
Project Number(s):
DA-1-T-662705-A-012
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*MOSSBAUER EFFECT, DYSPROSIUM), (*DYSPROSIUM, MAGNETIC PROPERTIES), (*GADOLINIUM ALLOYS, MAGNETIC PROPERTIES), (*RARE EARTH ELEMENTS, MAGNETIC PROPERTIES), CRYOGENICS, ALLOYS, ATOMIC ENERGY LEVELS, HYPERFINE STRUCTURE, QUADRUPOLE MOMENT, NUCLEAR SPINS
Field(s)/Group(s):
Atomic and Molecular Physics and Spectroscopy, Solid State Physics
Keyword(s):
MOSSBAUER SPECTROSCOPY, DYSPROSIUM ALLOYS, MOLECULAR FIELD THEORY, MAGNONS
Report Date:
1972 Dec 31