Magnetic transition temperatures follow crystallographic symmetry in samarium under high-pressures and low-temperatures
Magnetic transition temperatures follow crystallographic symmetry in samarium under high-pressures and low-temperatures
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在高压和低温下,钐的磁转变温度遵循晶体学对称性
DOI:
10.1088/1361-648x/29/6/065801
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
Vohra, Yogesh K
中科院分区:
文献类型:
--
作者:
Johnson, Craig R;Tsoi, Georgiy M;Vohra, Yogesh K
Magnetic ordering temperatures in rare earth metal samarium (Sm) have been studied using an ultrasensitive electrical transport measurement technique in a designer diamond anvil cell to high-pressure up to 47 GPa and low-temperature to 10 K. The two magnetic transitions at 106 K and 14 K in the α-Sm phase, attributed to antiferromagnetic ordering on hexagonal and cubic layers respectively, collapse in to one magnetic transition near 10 GPa when Sm assumes a double hexagonal close packed (dhcp) phase. On further increase in pressure above 34 GPa, the magnetic transitions split again as Sm adopts a hexagonal-hP3 structure indicating different magnetic transition temperatures for different crystallographic sites. A model for magnetic ordering for the hexagonal-hP3 phase in samarium has been proposed based on the experimental data. The magnetic transition temperatures closely follow the crystallographic symmetry during α-Sm→ dhcp→ fcc/dist. fcc→ hP3 structure sequence at high-pressures and low-temperatures.
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DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. Nakaue
通讯作者:
A. Nakaue
影响因子:
3.7
作者:
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影响因子:
3.7
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2014
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DOI:
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1987
期刊:
Physical Review B (Condensed Matter)
影响因子:
--
作者:
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通讯作者:
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