Published January 1, 2007 | Version v1
Journal article Metadata-only

Anomalous volume expansion in CaRu0.85Fe0.15O3: Neutron powder diffraction and magnetic Compton scattering

Creators

  • 1. College of Science and Engineering, Aoyama Gakuin University, Fuchinobe, Sagamihara, Kanagawa 157-8572 (Japan)
  • 2. Research Reactor Institute, Kyoto University, Kumatori-cho, Sennan-gun, Osaka 590-0494 (Japan)
  • 3. Department of Materials Structure Science, Graduate University for Advanced Studies, Tsukuba, Ibaraki 305-0801 (Japan)
  • 4. National Synchrotron Radiation Research Center, Taiwan, Hsin-Ann Road, Hsinchu Science Park, Hsinchu 30076, Taiwan (China)
  • 5. Japan Synchrotron Radiation Research Institute (JASRI/SPring-8), Sayo, Hyogo, 679-5198 (Japan)
  • 6. Nanoscale Materials Center, National Institute for Materials Science, Namiki, Tsukuba, Ibaraki 305-0044 (Japan)
  • 7. Kawazoe Frontier Technologies Co., Ltd., Kuden, Sakae, Yokohama, Kanagawa 931-113 (Japan)
  • 8. Faculty of Maritime Sciences, Kobe University, Fukaeminami, Higashinada, Kobe, Hyogo 658-0022 (Japan)

Description

Neutron powder diffraction and magnetic Compton scattering measurements were conducted for ferromagnetic CaRu0.85Fe0.15O3 at temperatures between 10 and 300 K. Anomalous volume expansion was observed in the neutron diffraction measurement below the Curie temperature (85 K), and Invar-like behavior was observed below 40 K. However, no structural phase transition was observed down to 10 K. The strong correlation between the volume expansion, ΔV, and the square magnetization, M2, suggests that the anomalous volume expansion is due to the magnetovolume effect that is caused by the occurrence of ferromagnetism. The magnetic Compton scattering experiments revealed the existence of a magnetic moment on Ru and the antiferromagnetic configuration of Fe and Ru moments. The formation of a ferrimagnetic order through the induction of the magnetic moment on the Ru ion is a possible reason for the anomalous volume expansion observed for CaRu0.85Fe0.15O3

Additional details

Identifiers

DOI
10.1103/PhysRevB.75.024414;

Publishing Information

Journal Title
Physical Review. B, Condensed Matter and Materials Physics
Journal Volume
75
Journal Issue
2
Journal Page Range
p. 024414-024414.6
ISSN
1098-0121

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39006471
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
ANTIFERROMAGNETISM; CALCIUM COMPOUNDS; COMPTON EFFECT; CURIE POINT; EXPANSION; FERROMAGNETIC MATERIALS; FERROMAGNETISM; MAGNETIC MOMENTS; MAGNETIZATION; NEUTRON DIFFRACTION; PHASE TRANSFORMATIONS; RUTHENIUM COMPOUNDS; RUTHENIUM IONS; TEMPERATURE DEPENDENCE
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BASIC INTERACTIONS; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; INTERACTIONS; IONS; MAGNETIC MATERIALS; MAGNETISM; MATERIALS; PHYSICAL PROPERTIES; REFRACTORY METAL COMPOUNDS; SCATTERING; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TRANSITION TEMPERATURE

Optional Information

Notes
(c) 2007 The American Physical Society