Tunneling magnetoresistance effect in Co/TPD granular films

P. Sheng; G. Ni; J. F. Yin; Y. Zhang; Z. Y. Tang; S. M. Zhou; Q. Y. Jin

doi:10.1016/j.jallcom.2008.10.123

Tunneling magnetoresistance effect in Co/TPD granular films

P. Sheng
, G. Ni^*
, J. F. Yin
, Y. Zhang
, Z. Y. Tang
, S. M. Zhou
, Q. Y. Jin

^*Corresponding author for this work

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

2 Scopus citations

Abstract

A series of Co_x(TPD)_1-x granular film samples were fabricated by co-evaporating technique, where Co nanoparticles are dispersed in TPD molecules matrix. The HRTEM images show typical microstructural characteristic of granular films. Magnetization, electrical conduction, and magnetoresistance (MR) of Co_x(TPD)_1-x granular films, have been investigated over a wide temperature range and Co volume fraction. The negative MR have been observed in these samples, reaching -1.75% (x = 36 vol.%, at 4.2 K, 10 kOe). The mechanism of magneto-transport behaviors has been discussed. It is suggested that the negative MR results from tunneling magnetoresistance (TMR) effect.

Original language	English
Pages (from-to)	32-35
Number of pages	4
Journal	Journal of Alloys and Compounds
Volume	477
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.10.123
State	Published - 27 May 2009
Externally published	Yes

Keywords

Composite materials
Magnetic films and multilayers
Magnetoresistance
Tunneling

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10.1016/j.jallcom.2008.10.123

Cite this

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title = "Tunneling magnetoresistance effect in Co/TPD granular films",

abstract = "A series of Cox(TPD)1-x granular film samples were fabricated by co-evaporating technique, where Co nanoparticles are dispersed in TPD molecules matrix. The HRTEM images show typical microstructural characteristic of granular films. Magnetization, electrical conduction, and magnetoresistance (MR) of Cox(TPD)1-x granular films, have been investigated over a wide temperature range and Co volume fraction. The negative MR have been observed in these samples, reaching -1.75\% (x = 36 vol.\%, at 4.2 K, 10 kOe). The mechanism of magneto-transport behaviors has been discussed. It is suggested that the negative MR results from tunneling magnetoresistance (TMR) effect.",

keywords = "Composite materials, Magnetic films and multilayers, Magnetoresistance, Tunneling",

author = "P. Sheng and G. Ni and Yin, \{J. F.\} and Y. Zhang and Tang, \{Z. Y.\} and Zhou, \{S. M.\} and Jin, \{Q. Y.\}",

year = "2009",

month = may,

day = "27",

doi = "10.1016/j.jallcom.2008.10.123",

language = "英语",

volume = "477",

pages = "32--35",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

publisher = "Elsevier B.V.",

number = "1-2",

}

TY - JOUR

T1 - Tunneling magnetoresistance effect in Co/TPD granular films

AU - Sheng, P.

AU - Ni, G.

AU - Yin, J. F.

AU - Zhang, Y.

AU - Tang, Z. Y.

AU - Zhou, S. M.

AU - Jin, Q. Y.

PY - 2009/5/27

Y1 - 2009/5/27

N2 - A series of Cox(TPD)1-x granular film samples were fabricated by co-evaporating technique, where Co nanoparticles are dispersed in TPD molecules matrix. The HRTEM images show typical microstructural characteristic of granular films. Magnetization, electrical conduction, and magnetoresistance (MR) of Cox(TPD)1-x granular films, have been investigated over a wide temperature range and Co volume fraction. The negative MR have been observed in these samples, reaching -1.75% (x = 36 vol.%, at 4.2 K, 10 kOe). The mechanism of magneto-transport behaviors has been discussed. It is suggested that the negative MR results from tunneling magnetoresistance (TMR) effect.

AB - A series of Cox(TPD)1-x granular film samples were fabricated by co-evaporating technique, where Co nanoparticles are dispersed in TPD molecules matrix. The HRTEM images show typical microstructural characteristic of granular films. Magnetization, electrical conduction, and magnetoresistance (MR) of Cox(TPD)1-x granular films, have been investigated over a wide temperature range and Co volume fraction. The negative MR have been observed in these samples, reaching -1.75% (x = 36 vol.%, at 4.2 K, 10 kOe). The mechanism of magneto-transport behaviors has been discussed. It is suggested that the negative MR results from tunneling magnetoresistance (TMR) effect.

KW - Composite materials

KW - Magnetic films and multilayers

KW - Magnetoresistance

KW - Tunneling

UR - https://www.scopus.com/pages/publications/67349155008

U2 - 10.1016/j.jallcom.2008.10.123

DO - 10.1016/j.jallcom.2008.10.123

M3 - 文章

AN - SCOPUS:67349155008

SN - 0925-8388

VL - 477

SP - 32

EP - 35

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Tunneling magnetoresistance effect in Co/TPD granular films

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Keywords

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