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

^*此作品的通信作者

研究成果: 雜誌貢獻 › 期刊論文 › 同行評審

4 引文斯高帕斯（Scopus）

摘要

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.

原文	英語
頁（從 - 到）	e1839-e1841
期刊	Journal of Magnetism and Magnetic Materials
卷	272-276
發行號	SUPPL. 1
DOIs	https://doi.org/10.1016/j.jmmm.2003.12.1381
出版狀態	已發佈 - 2004 5月
對外發佈	是

ASJC Scopus subject areas

電子、光磁材料
凝聚態物理學

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10.1016/j.jmmm.2003.12.1381

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@article{5ff1134751a7489ea24aa31a0997fa23,

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",

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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

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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

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