Powder neutron diffraction study of antiferromagnetism in Er/sub 6/Mn/sub 23/D/sub 23/
Journal Article
·
· AIP Conf. Proc.; (United States)
The compound Er/sub 6/Mn/sub 23/D/sub 23/ has been prepared and a powder neutron diffraction study has been done. The compound is paramagnetic at 300/sup 0/K and antiferromagnetic at 150/sup 0/K. The crystallographic space group is I4/mmm with deuterium atoms occupying a, 1, m, n, and o sites. Since Er/sub 6/Mn/sub 23/ belongs to the Fm3m space group, deuteration is responsible for a reduction in symmetry. At 150/sup 0/K the Er and Mn moments in the deuteride are collinear with the c-axis and the Shubnikov magnetic space group is P/sub I/4/mm'm'. This is also different from the non-deuterated Er/sub 6/Mn/sub 23/ which has its easy axis along the cubic <111> direction (the tetragonal <101> direction). In the deuteride, the e site Er atoms have moments of 2.5 ..mu../sub B/ while those on h sites have moments of 1.2 ..mu../sub B/. The Mn moments are approximately 3 ..mu../sub B/ for the b and c sites and approximately 1 ..mu../sub B/ for the two n sites. The Mn atoms on the f sites cannot have ordered moments due to the symmetry of the magnetic space group and, indeed, none is found. Magnetic susceptibility measurements are also reported.
- Research Organization:
- Univ. of Missouri, Rolla
- OSTI ID:
- 6488682
- Journal Information:
- AIP Conf. Proc.; (United States), Journal Name: AIP Conf. Proc.; (United States) Vol. 89; ISSN APCPC
- Country of Publication:
- United States
- Language:
- English
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Thesis/Dissertation
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Thu Dec 31 23:00:00 EST 1981
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OSTI ID:6108590
Neutron diffraction studies of the atomic and magnetic structures of Ho/sub 6/Mn/sub 23/, Ho/sub 6/Mn/sub 23/D/sub 22/ and some Y/sub 6/(Fe/sub 1-x/Al/sub x/)/sub 23/ compounds
Thesis/Dissertation
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Tue Dec 31 23:00:00 EST 1985
·
OSTI ID:7225768
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Sun May 01 00:00:00 EDT 2005
· Physical Review. B, Condensed Matter and Materials Physics
·
OSTI ID:20718996
Related Subjects
36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANTIFERROMAGNETISM
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DEUTERIDES
DEUTERIUM COMPOUNDS
DIFFRACTION
ERBIUM COMPOUNDS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MANGANESE COMPOUNDS
NEUTRON DIFFRACTION
NUMERICAL DATA
ORDER PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANTIFERROMAGNETISM
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DEUTERIDES
DEUTERIUM COMPOUNDS
DIFFRACTION
ERBIUM COMPOUNDS
EXPERIMENTAL DATA
HYDROGEN COMPOUNDS
INFORMATION
MAGNETIC MOMENTS
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MAGNETISM
MANGANESE COMPOUNDS
NEUTRON DIFFRACTION
NUMERICAL DATA
ORDER PARAMETERS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SCATTERING
TRANSITION ELEMENT COMPOUNDS