Microscopic coexistence of antiferromagnetic and spin-glass states

Microscopic coexistence of antiferromagnetic and spin-glass states

The disordered antiferromagnet PbFe sub(1/2)Nb sub(1/2)O sub(3) is investigated in a wide temperature range by combining Mossbauer spectroscopy and neutron diffraction experiments. It is demonstrated that the magnetic ground state is a microscopic coexistence of antiferromagnetic and spin-glass orde...

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Veröffentlicht in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-06, Vol.87 (22), Article 220403
Hauptverfasser: Chillal, S., Thede, M., Litterst, F. J., Gvasaliya, S. N., Shaplygina, T. A., Lushnikov, S. G., Zheludev, A.
Format: Artikel
Sprache:eng
Schlagworte:
Antiferromagnetism
Condensed matter
Fluctuation
Ground state
Magnetic moment
Mossbauer spectroscopy
Neutron diffraction
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Zusammenfassung:The disordered antiferromagnet PbFe sub(1/2)Nb sub(1/2)O sub(3) is investigated in a wide temperature range by combining Mossbauer spectroscopy and neutron diffraction experiments. It is demonstrated that the magnetic ground state is a microscopic coexistence of antiferromagnetic and spin-glass orders. This speromagnetlike phase features frozen-in short-range fluctuations of the Fe super(3+) magnetic moments that are transverse to the long-range ordered antiferromagnetic spin component.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.87.220403