Magnetic properties, microstructures and magnetoresistance effect in Co/Alq3 granular films

X. M. Zhao; G. Ni; Q. Shu; P. Sheng; J. Q. Wu; J. F. Yin; B. Ma; Q. Y. Jin

doi:10.1016/j.jmmm.2008.09.035

Magnetic properties, microstructures and magnetoresistance effect in Co/Alq₃ granular films

X. M. Zhao
, G. Ni^*
, Q. Shu
, P. Sheng
, J. Q. Wu
, J. F. Yin
, B. Ma
, Q. Y. Jin

^*Corresponding author for this work

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

6 Scopus citations

Abstract

A series of Co_x(Alq₃)_1-x granular films were prepared using the co-evaporating technique. HRTEM images show typical characteristics of granular films with the average size of 2-5 nm. It shows a gradual change from superparamagnetism to ferromagnetism with the rise of x. Negative magnetoresistance (MR) was observed, reaching -5.31% in x=0.44 sample at 30 K under the field of 10 kOe. The concentration dependence of MR and resistivity is also investigated. The inter-particle tunneling is believed to account for the negative MR effect.

Original language	English
Pages (from-to)	418-422
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	321
Issue number	5
DOIs	https://doi.org/10.1016/j.jmmm.2008.09.035
State	Published - Mar 2009
Externally published	Yes

Keywords

Granular film
Magnetoresistance
Organic semiconductor

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10.1016/j.jmmm.2008.09.035

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title = "Magnetic properties, microstructures and magnetoresistance effect in Co/Alq3 granular films",

abstract = "A series of Cox(Alq3)1-x granular films were prepared using the co-evaporating technique. HRTEM images show typical characteristics of granular films with the average size of 2-5 nm. It shows a gradual change from superparamagnetism to ferromagnetism with the rise of x. Negative magnetoresistance (MR) was observed, reaching -5.31\% in x=0.44 sample at 30 K under the field of 10 kOe. The concentration dependence of MR and resistivity is also investigated. The inter-particle tunneling is believed to account for the negative MR effect.",

keywords = "Granular film, Magnetoresistance, Organic semiconductor",

author = "Zhao, \{X. M.\} and G. Ni and Q. Shu and P. Sheng and Wu, \{J. Q.\} and Yin, \{J. F.\} and B. Ma and Jin, \{Q. Y.\}",

year = "2009",

month = mar,

doi = "10.1016/j.jmmm.2008.09.035",

language = "英语",

volume = "321",

pages = "418--422",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier B.V.",

number = "5",

}

TY - JOUR

T1 - Magnetic properties, microstructures and magnetoresistance effect in Co/Alq3 granular films

AU - Zhao, X. M.

AU - Ni, G.

AU - Shu, Q.

AU - Sheng, P.

AU - Wu, J. Q.

AU - Yin, J. F.

AU - Ma, B.

AU - Jin, Q. Y.

PY - 2009/3

Y1 - 2009/3

N2 - A series of Cox(Alq3)1-x granular films were prepared using the co-evaporating technique. HRTEM images show typical characteristics of granular films with the average size of 2-5 nm. It shows a gradual change from superparamagnetism to ferromagnetism with the rise of x. Negative magnetoresistance (MR) was observed, reaching -5.31% in x=0.44 sample at 30 K under the field of 10 kOe. The concentration dependence of MR and resistivity is also investigated. The inter-particle tunneling is believed to account for the negative MR effect.

AB - A series of Cox(Alq3)1-x granular films were prepared using the co-evaporating technique. HRTEM images show typical characteristics of granular films with the average size of 2-5 nm. It shows a gradual change from superparamagnetism to ferromagnetism with the rise of x. Negative magnetoresistance (MR) was observed, reaching -5.31% in x=0.44 sample at 30 K under the field of 10 kOe. The concentration dependence of MR and resistivity is also investigated. The inter-particle tunneling is believed to account for the negative MR effect.

KW - Granular film

KW - Magnetoresistance

KW - Organic semiconductor

UR - https://www.scopus.com/pages/publications/56449112635

U2 - 10.1016/j.jmmm.2008.09.035

DO - 10.1016/j.jmmm.2008.09.035

M3 - 文章

AN - SCOPUS:56449112635

SN - 0304-8853

VL - 321

SP - 418

EP - 422

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 5

ER -

Magnetic properties, microstructures and magnetoresistance effect in Co/Alq₃ granular films

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Keywords

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