Pressure-induced magnetoresistivity reversal in magnetite
Pressure-induced magnetoresistivity reversal in magnetite
复制标题
磁铁矿中压力引起的磁阻反转
DOI:
10.1063/1.3663217
复制
发表时间:
2011-11
影响因子:
4
通讯作者:
Chunxiao Gao
中科院分区:
文献类型:
--
作者:
Ningning Su;Yonghao Han;Yanzhang Ma;Hongwu Liu;Boheng Ma;Chunxiao Gao
The magnetoresistivity (MR) of nano-powdered magnetite has been measured under pressures up to 19.0 GPa and magnetic fields up to 15 kG. An unexpected quasi-linear positive MR below 6.0 GPa and an MR transition from positive to negative around 6.0 GPa have been found. The abnormal positive MR below 6.0 GPa originates from the confinement effect caused by nano-scale heterogeneity at the contact surface between Mo and Fe3O4 sample and the high negative spin polarization of magnetite. The MR transition at about 6.0 GPa comes from a phase transition from half-metal to metal induced by pressure.
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影响因子:
4
作者:
M. Pasternak;W. Xu;G. Rozenberg;R. Taylor;R. Jeanloz
通讯作者:
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影响因子:
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作者:
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DOI:
10.1002/pssa.2210090215
发表时间:
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期刊:
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影响因子:
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作者:
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影响因子:
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作者:
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