Issue |
Europhys. Lett.
Volume 37, Number 9, March 1997
|
|
---|---|---|
Page(s) | 633 - 638 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1997-00203-9 | |
Published online | 01 September 2002 |
Magnetic order in EuTe under pressures up to 17 GPa: A neutron study
1
Laboratoire Léon Brillouin, CEA-CNRS, CEA/Saclay - 91191 Gif-sur-Yvette, France
2
Russian Research Center "Kurchatov Institut" - 123182 Moscow, Russia
Received:
26
November
1996
Accepted:
10
February
1997
We studied magnetic order in EuTe by neutron diffraction under
applied pressures up to 17 GPa. In the range , the original antiferromagnetic
(AF) phase with a propagation vector
transforms into another AF
one with
, then into a ferromagnetic phase. The observed sequence
of magnetic transitions qualitatively confirms the proposed models of competing
ferromagnetic and antiferromagnetic interactions in the EuX family
. Nevertheless, a quantitative analysis of our data shows some
differences with microscopic models. The structural transition from NaCl
to CsCl phase occurs between 13 and 17 GPa. Interestingly, we do not observe
any long-range magnetic order in the high-pressure CsCl phase.
PACS: 75.25.+z – Spin arrangements in magnetically ordered materials (including neutron and spin-polarized electron studies, synchrotron-source X-ray scattering, etc.) / 75.30.Kz – Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.) / 75.50.Pp – Magnetic semiconductors
© EDP Sciences, 1997
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