HIGH-CONCENTRATION SUBSTITUTION OF GA AND AL IN R2FE17 (R = HO OR Y) - A NEUTRON STUDY OF CRYSTALLOGRAPHIC AND MAGNETIC-STRUCTURE

Authors
CHEN DF GOU C SUN K YAN QW ZHANG PL SHEN BG GONG HY CHENG ZH",RIDWAN,MUJAMILAH,MARSONGKOHADI
Citation
Df. Chen et al., HIGH-CONCENTRATION SUBSTITUTION OF GA AND AL IN R2FE17 (R = HO OR Y) - A NEUTRON STUDY OF CRYSTALLOGRAPHIC AND MAGNETIC-STRUCTURE, Physica. B, Condensed matter, 241, 1997, pp. 640-642
Citations number
7
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
241
Year of publication
1997
Pages
640 - 642
Database
ISI
SICI code
0921-4526(1997)241:<640:HSOGAA>2.0.ZU;2-X
Abstract
The crystallographic and magnetic structures of Ho2Fe9Ga8-xAlx (x = 0, 4) and Y2Fe9Ga8 were studied by powder neutron diffraction. The atomic fractional occupancies of gallium and aluminum and the magnetic momen ts of Ho and Fe atoms were obtained by Rietveld structure analysis met hod. The gallium and aluminum occupy 18f, 18h and 6c sites, but prefer to occupy the 6c and 18f sites (space group R (3) over bar m). The ma gnetic moments of all the phases below the Curie temperature show unia xial anisotropy. (C) 1998 Elsevier Science B.V. All rights reserved.