High pressure neutron diffraction study of magnetic ordering in erbium
High pressure neutron diffraction study of magnetic ordering in erbium
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铒磁有序的高压中子衍射研究
DOI:
10.1016/j.jmmm.2024.172066
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发表时间:
2024
影响因子:
2.7
通讯作者:
Vohra, Yogesh K.
中科院分区:
文献类型:
--
作者:
Clay, Matthew P.;Sereika, Raimundas;Higgins, Maurissa K.;dos Santos, Antonio M.;Molaison, Jamie J.;Vohra, Yogesh K.
We have studied magnetic ordering in polycrystalline erbium at high pressures up to 32 GPa and low temperatures down to 10 K using neutron diffraction techniques at the Spallation Neutron Source at Oak Ridge National Laboratory, USA. For the hexagonal close-packed (hcp) phase, strong nuclear and magnetic satellite intensities permit a simultaneous refinement of the nuclear and magnetic structures. At 1 GPa of applied pressure, a modulation vector q= γ c∗ with γ≈ 2/7 for the c-axis modulated and cycloidal phases is consistent with prior single-crystal studies at low pressures. At 6.7 GPa in the hcp phase, we find γ≈ 0.31, indicating a reduction in the period of the magnetic structure with respect to the crystal lattice. The magnetic ordering temperature at 6.7 GPa is slightly above 60 K. At 32 GPa in the double hexagonal close-packed phase, the magnetic scattering constrains the magnetic ordering temperature to 25±5 K. Our neutron diffraction study demonstrates that the magnetic ordering persists in the high-pressure double hexagonal close-packed phase of erbium to the highest pressure of 32 GPa.
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DOI:
10.1088/0953-8984/2/14/019
发表时间:
1990
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
H. Astrom;D. Chen;G. Benediktsson;K. Rao
通讯作者:
K. Rao
影响因子:
3.7
作者:
Sarah A Thomas;G. Tsoi;Lowell E. Wenger;Y. Vohra;S. Weir
通讯作者:
S. Weir
DOI:
10.1088/0953-8984/4/49/030
发表时间:
1992
期刊:
Journal of Physics: Condensed Matter
影响因子:
--
作者:
R. Eccleston;S. Palmer
通讯作者:
S. Palmer
影响因子:
--
作者:
J. Milton;T. Scott
通讯作者:
T. Scott
影响因子:
2.7
作者:
H. Lin;M. F. Collins;T. Holden;W. Wei
通讯作者:
W. Wei