Transport properties in iron-iron oxide film near percolation threshold

Shanling Ren; Biao You; Jun Du; X. J. Bai; J. Zhang; An Hu; Bei Zhang; X. X. Zhang

doi:10.1016/j.jallcom.2007.10.142

Transport properties in iron-iron oxide film near percolation threshold

Shanling Ren, Biao You^*, Jun Du, X. J. Bai, J. Zhang, An Hu, Bei Zhang, X. X. Zhang

^*Corresponding author for this work

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Abstract

Iron-iron oxide granular films are fabricated using dc magnetron sputtering. Their structural, magnetic and transport properties are studied in the vicinity of percolation threshold. X-ray photoelectron spectroscopy and transmission electron microscopy confirm the coexistence of iron and FeO_x. Magnetic measurement indicates the exchange coupling between the iron and the FeO_x matrix. Metal-insulator transition is observed. The non-monotonic temperature dependencies of resistivity occur near the percolation threshold and the mechanism is investigated with the longitudinal and transverse magnetic transport measurement in terms of weak localization.

Original language	English (US)
Pages (from-to)	417-421
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	465
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2007.10.142
State	Published - Oct 6 2008

Bibliographical note

Funding Information:
This work is supported by National Basic Research Program of China (No. 2007CB925104), the National Science Foundation of China (No. 10474038, 10574065) and the Hong Kong RGC Grants (No. 605704 and 605605).

Keywords

Electronic transport
Magnetic films and multilayers
Magnetic measurements

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.jallcom.2007.10.142

Cite this

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title = "Transport properties in iron-iron oxide film near percolation threshold",

abstract = "Iron-iron oxide granular films are fabricated using dc magnetron sputtering. Their structural, magnetic and transport properties are studied in the vicinity of percolation threshold. X-ray photoelectron spectroscopy and transmission electron microscopy confirm the coexistence of iron and FeOx. Magnetic measurement indicates the exchange coupling between the iron and the FeOx matrix. Metal-insulator transition is observed. The non-monotonic temperature dependencies of resistivity occur near the percolation threshold and the mechanism is investigated with the longitudinal and transverse magnetic transport measurement in terms of weak localization.",

keywords = "Electronic transport, Magnetic films and multilayers, Magnetic measurements",

author = "Shanling Ren and Biao You and Jun Du and Bai, {X. J.} and J. Zhang and An Hu and Bei Zhang and Zhang, {X. X.}",

note = "Funding Information: This work is supported by National Basic Research Program of China (No. 2007CB925104), the National Science Foundation of China (No. 10474038, 10574065) and the Hong Kong RGC Grants (No. 605704 and 605605).",

year = "2008",

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doi = "10.1016/j.jallcom.2007.10.142",

language = "English (US)",

volume = "465",

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TY - JOUR

T1 - Transport properties in iron-iron oxide film near percolation threshold

AU - Ren, Shanling

AU - You, Biao

AU - Du, Jun

AU - Bai, X. J.

AU - Zhang, J.

AU - Hu, An

AU - Zhang, Bei

AU - Zhang, X. X.

N1 - Funding Information: This work is supported by National Basic Research Program of China (No. 2007CB925104), the National Science Foundation of China (No. 10474038, 10574065) and the Hong Kong RGC Grants (No. 605704 and 605605).

PY - 2008/10/6

Y1 - 2008/10/6

N2 - Iron-iron oxide granular films are fabricated using dc magnetron sputtering. Their structural, magnetic and transport properties are studied in the vicinity of percolation threshold. X-ray photoelectron spectroscopy and transmission electron microscopy confirm the coexistence of iron and FeOx. Magnetic measurement indicates the exchange coupling between the iron and the FeOx matrix. Metal-insulator transition is observed. The non-monotonic temperature dependencies of resistivity occur near the percolation threshold and the mechanism is investigated with the longitudinal and transverse magnetic transport measurement in terms of weak localization.

AB - Iron-iron oxide granular films are fabricated using dc magnetron sputtering. Their structural, magnetic and transport properties are studied in the vicinity of percolation threshold. X-ray photoelectron spectroscopy and transmission electron microscopy confirm the coexistence of iron and FeOx. Magnetic measurement indicates the exchange coupling between the iron and the FeOx matrix. Metal-insulator transition is observed. The non-monotonic temperature dependencies of resistivity occur near the percolation threshold and the mechanism is investigated with the longitudinal and transverse magnetic transport measurement in terms of weak localization.

KW - Electronic transport

KW - Magnetic films and multilayers

KW - Magnetic measurements

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U2 - 10.1016/j.jallcom.2007.10.142

DO - 10.1016/j.jallcom.2007.10.142

M3 - Article

AN - SCOPUS:50149121813

SN - 0925-8388

VL - 465

SP - 417

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JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Transport properties in iron-iron oxide film near percolation threshold

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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