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Neutron diffraction evidence for a new ferromagnetic phase in Cr doped Pr0.5Ca0.5MnO3

Appl. Phys. Lett. 73, 3772 (1998); doi:10.1063/1.122890

Issue Date: 21 December 1998

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F. Damay, C. Martin, A. Maignan, M. Hervieu, and B. Raveau
Laboratoire CRISMAT, UMR 6508 associée au CNRS, ISMRA et Université de Caen 6, Boulevard du Maréchal Juin, 14050 CAEN Cedex-France

F. Bourée and G. André
Laboratoire Léon Brillouin, CE Saclay, 91191 GIF SUR YVETTE
Cr doping in Pr0.5Ca0.5MnO3 is known to destroy the low-temperature antiferromagnetic charge-ordered state and to induce a ferromagnetic component as well as colossal magnetoresistance properties. Effects of Cr doping on the magnetic and nuclear structures are studied here by neutron diffraction for Pr0.5Ca0.5Mn0.95Cr0.05O3. It is shown that, at low temperature, the strongly distorted charge ordered structure usually observed in Pr0.5Ca0.5MnO3 is replaced by a ferromagnetic phase in which the basal-plane distortion of the MnO6 octahedra has disappeared, in agreement with the restoration of the double–exchange interactions. ©1998 American Institute of Physics.
History: Received 1 July 1998; accepted 23 October 1998
Permalink: http://link.aip.org/link/?APPLAB/73/3772/1
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KEYWORDS and PACS

Keywords
PACS
  • 75.25.+z
    Magnetic properties and materials Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source x-ray scattering, etc.)
  • 75.50.Ee
    Magnetic properties and materials Studies of specific magnetic materials Antiferromagnetics
  • 75.30.Kz
    Magnetic properties and materials Intrinsic properties of magnetically ordered materials Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.)
  • YEAR: 1998

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PUBLICATION DATA

ISSN:
0003-6951 (print)   1077-3118 (online)
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REFERENCES (16)
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