Variation in hopping conduction across the magnetic transition in spinel Mn1.56Co0.96Ni0.48O4 films

Jing Wu; Zhiming Huang; Yun Hou; Yanqing Gao; Junhao Chu

doi:10.1063/1.3318459

Variation in hopping conduction across the magnetic transition in spinel Mn_1.56Co_0.96Ni_0.48O₄ films

Jing Wu^*
, Zhiming Huang
, Yun Hou
, Yanqing Gao
, Junhao Chu

^*Corresponding author for this work

CAS - Shanghai Institute of Technical Physics

Research output: Contribution to journal › Article › peer-review

32 Scopus citations

Abstract

The temperature dependent dc resistivity of spinel Mn_1.56Co _0.96Ni_0.48O₄ (MCN) films is measured in the range of 130-304 K. The hopping exponent p of small polaron hopping conduction shows a clear variation from a value of 0.46 in the paramagnetic to 0.91 in the ferromagnetic phase. In order to explain such variation, a model is proposed where Gaussian distributed localized electron states gradually withdraw from the Hubbard band gap below the magnetic transition as a result of increased magnetic order. This correlation between hopping conduction and magnetic order in MCN films may provide a possible approach to fabricate the devices which couple magnetic and electronic properties in one unit.

Original language	English
Article number	082103
Journal	Applied Physics Letters
Volume	96
Issue number	8
DOIs	https://doi.org/10.1063/1.3318459
State	Published - 2010
Externally published	Yes

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title = "Variation in hopping conduction across the magnetic transition in spinel Mn1.56Co0.96Ni0.48O4 films",

abstract = "The temperature dependent dc resistivity of spinel Mn1.56Co 0.96Ni0.48O4 (MCN) films is measured in the range of 130-304 K. The hopping exponent p of small polaron hopping conduction shows a clear variation from a value of 0.46 in the paramagnetic to 0.91 in the ferromagnetic phase. In order to explain such variation, a model is proposed where Gaussian distributed localized electron states gradually withdraw from the Hubbard band gap below the magnetic transition as a result of increased magnetic order. This correlation between hopping conduction and magnetic order in MCN films may provide a possible approach to fabricate the devices which couple magnetic and electronic properties in one unit.",

author = "Jing Wu and Zhiming Huang and Yun Hou and Yanqing Gao and Junhao Chu",

year = "2010",

doi = "10.1063/1.3318459",

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volume = "96",

journal = "Applied Physics Letters",

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T1 - Variation in hopping conduction across the magnetic transition in spinel Mn1.56Co0.96Ni0.48O4 films

AU - Wu, Jing

AU - Huang, Zhiming

AU - Hou, Yun

AU - Gao, Yanqing

AU - Chu, Junhao

PY - 2010

Y1 - 2010

N2 - The temperature dependent dc resistivity of spinel Mn1.56Co 0.96Ni0.48O4 (MCN) films is measured in the range of 130-304 K. The hopping exponent p of small polaron hopping conduction shows a clear variation from a value of 0.46 in the paramagnetic to 0.91 in the ferromagnetic phase. In order to explain such variation, a model is proposed where Gaussian distributed localized electron states gradually withdraw from the Hubbard band gap below the magnetic transition as a result of increased magnetic order. This correlation between hopping conduction and magnetic order in MCN films may provide a possible approach to fabricate the devices which couple magnetic and electronic properties in one unit.

AB - The temperature dependent dc resistivity of spinel Mn1.56Co 0.96Ni0.48O4 (MCN) films is measured in the range of 130-304 K. The hopping exponent p of small polaron hopping conduction shows a clear variation from a value of 0.46 in the paramagnetic to 0.91 in the ferromagnetic phase. In order to explain such variation, a model is proposed where Gaussian distributed localized electron states gradually withdraw from the Hubbard band gap below the magnetic transition as a result of increased magnetic order. This correlation between hopping conduction and magnetic order in MCN films may provide a possible approach to fabricate the devices which couple magnetic and electronic properties in one unit.

UR - https://www.scopus.com/pages/publications/77749297998

U2 - 10.1063/1.3318459

DO - 10.1063/1.3318459

M3 - 文章

AN - SCOPUS:77749297998

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 8

M1 - 082103

ER -

Variation in hopping conduction across the magnetic transition in spinel Mn_1.56Co_0.96Ni_0.48O₄ films

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