Published August 2007 | Version v1
Journal article Metadata-only

Structural, electronic and magnetic properties of ErFeMn and ErFeMnH4.7 compounds

Creators

  • 1. Department of Chemistry, National Taiwan University, Taipei, Taiwan 106 (China)
  • 2. Department of Physics, National Sun Yat-Shen University, Kaoshiung 804, Taiwan (China)
  • 3. Chimie Metallurgique des Terres Rares, Institut de Chimie et des Materiaux de Paris Est, Centre National de la Recherche Scientifique, 2-8 rue H Dunant, 94320 Cedex (France)
  • 4. Institute of Physical Chemistry, Polish Academy of Sciences, Warsaw (Poland)
  • 5. National Synchrotron Radiation Research Center, Hsinchu, Taiwan 300 (China)

Description

ErFeMn intermetallic alloy after exposure to high hydrogen pressure transformed into the ErFeMnH4.7 hydride. Both parent material and hydride were investigated for their structural, electronic and magnetic properties by synchrotron XRD (x-ray diffraction), XANES (x-ray absorption near edge structure) and SQUID (superconducting quantum interference device), respectively. Hydrogenation did not change the structure symmetry but caused large expansion of the lattice parameters. Mn and Fe K-edge XANES study of the parent alloy and its hydride reveals that charge on both Mn and Fe atoms remains the same and slightly increases after hydrogenation. Hydrogenation of ErFeMn alloy also caused decrease in the magnetic moment

Additional details

Identifiers

DOI
10.1088/1367-2630/9/8/271;
PII
S1367-2630(07)49233-3;

Publishing Information

Journal Title
New Journal of Physics
Journal Volume
9
Journal Issue
8
Journal Page Range
p. 271
ISSN
1367-2630

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39032234
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION SPECTROSCOPY; ERBIUM ALLOYS; HYDRIDES; HYDROGEN; HYDROGENATION; INTERMETALLIC COMPOUNDS; IRON ALLOYS; LATTICE PARAMETERS; MAGNETIC MOMENTS; MAGNETIC PROPERTIES; MANGANESE ALLOYS; SQUID DEVICES; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY
Descriptors DEC
ALLOYS; CHEMICAL REACTIONS; COHERENT SCATTERING; DIFFRACTION; ELECTRONIC EQUIPMENT; ELEMENTS; EQUIPMENT; FLUXMETERS; HYDROGEN COMPOUNDS; MEASURING INSTRUMENTS; MICROWAVE EQUIPMENT; NONMETALS; PHYSICAL PROPERTIES; RARE EARTH ALLOYS; SCATTERING; SPECTROSCOPY; SUPERCONDUCTING DEVICES; TRANSITION ELEMENT ALLOYS