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Intensive structural investigation of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds using high resolution powder neutron diffractometer

Abstract

The crystallographic and magnetic structure of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds system were refined by Rietveld analyses of the high resolution neutron powder diffraction data. The analyses results show that the substituent atoms were not distributed randomly over the Fe sites, but preferentially occupied some Fe sites. More further, it was also found that the substituent atoms which atomic radius smaller than Fe tend to avoid the 6c site at low concentration while the larger substituent atom tend to replace the Fe atom at this 6c site corresponding to their concentration. From these crystallographic data, it was suggested that the change of magnetic ordering temperature Tc, is not mainly determined by the change of short bond distance between this `dumb-bell` atoms, but it was also influenced by the nearest coordinated atoms to this site. (author)
Authors:
Mujamilah,; Ridwan, [1] 
  1. Materials Science Research Center, National Atomic Energy Agency of Indonesia, Jakarta (Indonesia)
Publication Date:
Oct 01, 1998
Product Type:
Conference
Report Number:
JAERI-Conf-98-015; CONF-9711223-
Reference Number:
SCA: 665100; PA: JPN-99:002114; EDB-99:039262; SN: 99002060098
Resource Relation:
Conference: 1997 workshop on the utilization of research reactors, Bandung (Indonesia), 6-13 Nov 1997; Other Information: PBD: Oct 1998; Related Information: Is Part Of Proceedings of the 1997 workshop on the utilization of research reactors; PB: 495 p.
Subject:
66 PHYSICS; NEUTRON DIFFRACTION; POWDERS; NEUTRON DIFFRACTOMETERS; INTERMETALLIC COMPOUNDS; STRUCTURAL CHEMICAL ANALYSIS; MAGNETIZATION; CRYSTAL STRUCTURE; X-RAY DIFFRACTION; IRON COMPOUNDS; RARE EARTH COMPOUNDS
OSTI ID:
327202
Research Organizations:
Japan Atomic Energy Research Inst., Tokyo (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE99723943; TRN: JP9902114
Availability:
OSTI as DE99723943
Submitting Site:
JPN
Size:
pp. 210-239
Announcement Date:

Citation Formats

Mujamilah,, and Ridwan,. Intensive structural investigation of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds using high resolution powder neutron diffractometer. Japan: N. p., 1998. Web.
Mujamilah,, & Ridwan,. Intensive structural investigation of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds using high resolution powder neutron diffractometer. Japan.
Mujamilah,, and Ridwan,. 1998. "Intensive structural investigation of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds using high resolution powder neutron diffractometer." Japan.
@misc{etde_327202,
title = {Intensive structural investigation of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds using high resolution powder neutron diffractometer}
author = {Mujamilah,, and Ridwan,}
abstractNote = {The crystallographic and magnetic structure of R{sub 2}Fe{sub 17-x}M{sub x} intermetallic compounds system were refined by Rietveld analyses of the high resolution neutron powder diffraction data. The analyses results show that the substituent atoms were not distributed randomly over the Fe sites, but preferentially occupied some Fe sites. More further, it was also found that the substituent atoms which atomic radius smaller than Fe tend to avoid the 6c site at low concentration while the larger substituent atom tend to replace the Fe atom at this 6c site corresponding to their concentration. From these crystallographic data, it was suggested that the change of magnetic ordering temperature Tc, is not mainly determined by the change of short bond distance between this `dumb-bell` atoms, but it was also influenced by the nearest coordinated atoms to this site. (author)}
place = {Japan}
year = {1998}
month = {Oct}
}