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Title: Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides

Abstract

The effect of hydrogenation on the magnetic properties and crystal structure of 4f and 5f intermetallics was studied on HoNiAlH{sub 2.0}, UNiAlH{sub 2.3} and UNiAlD{sub 2.1}. The incorporation of hydrogen into HoNiAl leads to a decrease of the magnetic ordering temperature from 13 to 6 K, while it increases from 19 K to values in the range 90-100 K in the UNiAl-H system. The crystal lattices of all compounds are anisotropically expanded. Moreover, the crystal symmetry is lowered to orthorhombic in HoNiAlH{sub 2.0}, but remains hexagonal for UNiAlH(D){sub x}. Three different deuterium positions were found for both compounds. (c) 2000 American Institute of Physics.

Authors:
 [1];  [1];  [1];  [2];  [3];  [4];  [4];  [5];  [5];  [6]
  1. Department of Electronic Structures, Charles University, Ke Karlovu 5, 121 16 Prague 2, The Czech Republic (Czech Republic)
  2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
  3. Department of Physics, New Mexico State University, Las Cruces, New Mexico 88003 (United States)
  4. Institute for Energy Technology, P.O. Box 40, Kjeller, N-2027, (Norway)
  5. W. Trzebiatowski Institute for Low Temperature and Structure Research, Polish Academy of Sciences, 50-950 Wroclaw, (Poland)
  6. Department of Physics and Astronomy, The University of Kentucky, Lexington, Kentucky 40506 (United States)
Publication Date:
OSTI Identifier:
20216285
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 9; Other Information: PBD: 1 May 2000; Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; HOLMIUM ALLOYS; NICKEL ALLOYS; ALUMINIUM ALLOYS; HYDRIDES; CRYSTAL STRUCTURE; INTERMETALLIC COMPOUNDS; ORDER-DISORDER TRANSFORMATIONS; MAGNETIC PROPERTIES; EXPERIMENTAL DATA

Citation Formats

Kolomiets, A. V., Havela, L., Rafaja, D., Bordallo, H. N., Nakotte, H., Yartys, V. A., Hauback, B. C., Drulis, H., Iwasieczko, W., and DeLong, L. E. Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides. United States: N. p., 2000. Web. doi:10.1063/1.372851.
Kolomiets, A. V., Havela, L., Rafaja, D., Bordallo, H. N., Nakotte, H., Yartys, V. A., Hauback, B. C., Drulis, H., Iwasieczko, W., & DeLong, L. E. Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides. United States. doi:10.1063/1.372851.
Kolomiets, A. V., Havela, L., Rafaja, D., Bordallo, H. N., Nakotte, H., Yartys, V. A., Hauback, B. C., Drulis, H., Iwasieczko, W., and DeLong, L. E. Mon . "Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides". United States. doi:10.1063/1.372851.
@article{osti_20216285,
title = {Magnetic properties and crystal structure of HoNiAl and UNiAl hydrides},
author = {Kolomiets, A. V. and Havela, L. and Rafaja, D. and Bordallo, H. N. and Nakotte, H. and Yartys, V. A. and Hauback, B. C. and Drulis, H. and Iwasieczko, W. and DeLong, L. E.},
abstractNote = {The effect of hydrogenation on the magnetic properties and crystal structure of 4f and 5f intermetallics was studied on HoNiAlH{sub 2.0}, UNiAlH{sub 2.3} and UNiAlD{sub 2.1}. The incorporation of hydrogen into HoNiAl leads to a decrease of the magnetic ordering temperature from 13 to 6 K, while it increases from 19 K to values in the range 90-100 K in the UNiAl-H system. The crystal lattices of all compounds are anisotropically expanded. Moreover, the crystal symmetry is lowered to orthorhombic in HoNiAlH{sub 2.0}, but remains hexagonal for UNiAlH(D){sub x}. Three different deuterium positions were found for both compounds. (c) 2000 American Institute of Physics.},
doi = {10.1063/1.372851},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 9,
volume = 87,
place = {United States},
year = {2000},
month = {5}
}