Structural and magnetic properties of DyFe/sub 3/ hydrides
The ternary hydride phases, DyFe/sub 3/H/sub x/ with x = 1.7, 2.5, and 4.2 all retain the PuNi/sub 3/ rhombohedral structure of DyFe/sub 3/ with a maximum volume expansion of 18% for DyFe/sub 3/H/sub 4.2/. All phases show a preferential expansion parallel to the c/sub 0/ axis. From bulk magnetization measurements, the Dy-Fe spin compensation temperature is found to decrease linearly from 545/sup 0/K for DyFe/sub 3/ to 150/sup 0/K for DyFe/sub 3/H/sub 4.2/ with increasing volume of the hydride phases. The /sup 161/Dy Moessbauer results for the two Dy sites in the structure indicate a slight reduction occurs in free-ion moment found for DyFe/sub 3/ in all hydride phases. In addition, the /sup 57/Fe Moessbauer data show that the average Fe moment for the five inequivalent Fe sites increases with hydrogen concentration up to x = 2.5.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-31-109-ENG-34
- OSTI ID:
- 6876859
- Report Number(s):
- CONF-800402-17; TRN: 81-004776
- Resource Relation:
- Conference: International symposium on the properties and applications of metal hydrides, Colorado Springs, CO, USA, 7 Apr 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
DYSPROSIUM HYDRIDES
MAGNETIC PROPERTIES
PHASE STUDIES
IRON HYDRIDES
DYSPROSIUM COMPOUNDS
HYDRIDES
HYDROGEN COMPOUNDS
IRON COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
360602* - Other Materials- Structure & Phase Studies
360603 - Materials- Properties