Tunnel magneto-impedance effect of the ZnNi-ferrite encapsulated NiFe microspheres

C. M. Fu; C. Y. Hsu; Y. C. Chao; D. S. Kim; N. Matsushita; M. Abe

doi:10.1016/j.jmmm.2003.12.1381

Tunnel magneto-impedance effect of the ZnNi-ferrite encapsulated NiFe microspheres

C. M. Fu^*, C. Y. Hsu, Y. C. Chao, D. S. Kim, N. Matsushita, M. Abe

^*Corresponding author for this work

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

4 Citations (Scopus)

Abstract

We report the first observation of spin tunneling effect on the ZnNi-ferrite encapsulated Ni-Fe microspheres, which is measured by the impedance spectra using a network analyzer. The field dependence of impedance of the composites has shown a typical behavior of magneto-tunneling effect, with a maximum magneto-impedance ratio of about 2.35%, at a frequency of 100 kHz and at the room temperature. The temperature dependence of the magnetoimpedance and dielectric modulus has been investigated to explore the origin for tunneling mechanism. Implications for magnetic sensing are discussed.

Original language	English
Pages (from-to)	e1839-e1841
Journal	Journal of Magnetism and Magnetic Materials
Volume	272-276
Issue number	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1381
Publication status	Published - 2004 May
Externally published	Yes

Keywords

Magnetoimpedance
Microspheres
Spin tunneling
ZnNi-ferrite

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2003.12.1381

Cite this

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title = "Tunnel magneto-impedance effect of the ZnNi-ferrite encapsulated NiFe microspheres",

abstract = "We report the first observation of spin tunneling effect on the ZnNi-ferrite encapsulated Ni-Fe microspheres, which is measured by the impedance spectra using a network analyzer. The field dependence of impedance of the composites has shown a typical behavior of magneto-tunneling effect, with a maximum magneto-impedance ratio of about 2.35%, at a frequency of 100 kHz and at the room temperature. The temperature dependence of the magnetoimpedance and dielectric modulus has been investigated to explore the origin for tunneling mechanism. Implications for magnetic sensing are discussed.",

keywords = "Magnetoimpedance, Microspheres, Spin tunneling, ZnNi-ferrite",

author = "Fu, {C. M.} and Hsu, {C. Y.} and Chao, {Y. C.} and Kim, {D. S.} and N. Matsushita and M. Abe",

note = "Funding Information: This work was supported in part by the Taiwan National Science Foundation under Grant No. NSC-91-2112-M-017-004.",

year = "2004",

month = may,

doi = "10.1016/j.jmmm.2003.12.1381",

language = "English",

volume = "272-276",

pages = "e1839--e1841",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier BV",

number = "SUPPL. 1",

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TY - JOUR

T1 - Tunnel magneto-impedance effect of the ZnNi-ferrite encapsulated NiFe microspheres

AU - Fu, C. M.

AU - Hsu, C. Y.

AU - Chao, Y. C.

AU - Kim, D. S.

AU - Matsushita, N.

AU - Abe, M.

N1 - Funding Information: This work was supported in part by the Taiwan National Science Foundation under Grant No. NSC-91-2112-M-017-004.

PY - 2004/5

Y1 - 2004/5

N2 - We report the first observation of spin tunneling effect on the ZnNi-ferrite encapsulated Ni-Fe microspheres, which is measured by the impedance spectra using a network analyzer. The field dependence of impedance of the composites has shown a typical behavior of magneto-tunneling effect, with a maximum magneto-impedance ratio of about 2.35%, at a frequency of 100 kHz and at the room temperature. The temperature dependence of the magnetoimpedance and dielectric modulus has been investigated to explore the origin for tunneling mechanism. Implications for magnetic sensing are discussed.

AB - We report the first observation of spin tunneling effect on the ZnNi-ferrite encapsulated Ni-Fe microspheres, which is measured by the impedance spectra using a network analyzer. The field dependence of impedance of the composites has shown a typical behavior of magneto-tunneling effect, with a maximum magneto-impedance ratio of about 2.35%, at a frequency of 100 kHz and at the room temperature. The temperature dependence of the magnetoimpedance and dielectric modulus has been investigated to explore the origin for tunneling mechanism. Implications for magnetic sensing are discussed.

KW - Magnetoimpedance

KW - Microspheres

KW - Spin tunneling

KW - ZnNi-ferrite

UR - http://www.scopus.com/inward/record.url?scp=23144435508&partnerID=8YFLogxK

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U2 - 10.1016/j.jmmm.2003.12.1381

DO - 10.1016/j.jmmm.2003.12.1381

M3 - Article

AN - SCOPUS:23144435508

SN - 0304-8853

VL - 272-276

SP - e1839-e1841

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - SUPPL. 1

ER -

Tunnel magneto-impedance effect of the ZnNi-ferrite encapsulated NiFe microspheres

Abstract

Keywords

ASJC Scopus subject areas

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