Impedance spectra of field-aligned CrO2 needle-shape powders

C. M. Fu; Y. C. Chao; S. H. Hung; C. P. Lin; J. Tang

doi:10.1016/j.jmmm.2004.04.066

Impedance spectra of field-aligned CrO₂ needle-shape powders

C. M. Fu^*, Y. C. Chao, S. H. Hung, C. P. Lin, J. Tang

^*此作品的通信作者

研究成果: 雜誌貢獻 › 會議論文 › 同行評審

3 引文斯高帕斯（Scopus）

摘要

The frequency behaviour of the electrical properties of field-aligned CrO₂ needle-shape powders has been investigated by the impedance spectroscopy method. The low frequencies R(f) increase with increasing θ, the angles between the applied current direction and the easy axis of the aligned samples. The specific frequency, of which a maximum -X(f) occurred, is varied towards the lower ones as θ increased. Analysis, based on classical electromagnetism as well as equivalent circuit method, has been performed to disclose the mechanism underlying for AC conductivity.

原文	英語
頁（從 - 到）	283-286
頁數	4
期刊	Journal of Magnetism and Magnetic Materials
卷	282
發行號	1-3
DOIs	https://doi.org/10.1016/j.jmmm.2004.04.066
出版狀態	已發佈 - 2004 11月
對外發佈	是
事件	International Symposium on Advanced Magnetic Technologies - Taipei, 臺灣持續時間: 2003 11月 13 → 2003 11月 16

ASJC Scopus subject areas

電子、光磁材料
凝聚態物理學

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10.1016/j.jmmm.2004.04.066

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title = "Impedance spectra of field-aligned CrO2 needle-shape powders",

abstract = "The frequency behaviour of the electrical properties of field-aligned CrO2 needle-shape powders has been investigated by the impedance spectroscopy method. The low frequencies R(f) increase with increasing θ, the angles between the applied current direction and the easy axis of the aligned samples. The specific frequency, of which a maximum -X(f) occurred, is varied towards the lower ones as θ increased. Analysis, based on classical electromagnetism as well as equivalent circuit method, has been performed to disclose the mechanism underlying for AC conductivity.",

keywords = "Half-metal, Impedance spectroscopy, Magneto-resistance",

author = "Fu, {C. M.} and Chao, {Y. C.} and Hung, {S. H.} and Lin, {C. P.} and J. Tang",

note = "Funding Information: This research was supported by the National Science Council, Taiwan under the Grant No. NSC 92-2120-M-017-001.; International Symposium on Advanced Magnetic Technologies ; Conference date: 13-11-2003 Through 16-11-2003",

year = "2004",

month = nov,

doi = "10.1016/j.jmmm.2004.04.066",

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T1 - Impedance spectra of field-aligned CrO2 needle-shape powders

AU - Fu, C. M.

AU - Chao, Y. C.

AU - Hung, S. H.

AU - Lin, C. P.

AU - Tang, J.

N1 - Funding Information: This research was supported by the National Science Council, Taiwan under the Grant No. NSC 92-2120-M-017-001.

PY - 2004/11

Y1 - 2004/11

N2 - The frequency behaviour of the electrical properties of field-aligned CrO2 needle-shape powders has been investigated by the impedance spectroscopy method. The low frequencies R(f) increase with increasing θ, the angles between the applied current direction and the easy axis of the aligned samples. The specific frequency, of which a maximum -X(f) occurred, is varied towards the lower ones as θ increased. Analysis, based on classical electromagnetism as well as equivalent circuit method, has been performed to disclose the mechanism underlying for AC conductivity.

AB - The frequency behaviour of the electrical properties of field-aligned CrO2 needle-shape powders has been investigated by the impedance spectroscopy method. The low frequencies R(f) increase with increasing θ, the angles between the applied current direction and the easy axis of the aligned samples. The specific frequency, of which a maximum -X(f) occurred, is varied towards the lower ones as θ increased. Analysis, based on classical electromagnetism as well as equivalent circuit method, has been performed to disclose the mechanism underlying for AC conductivity.

KW - Half-metal

KW - Impedance spectroscopy

KW - Magneto-resistance

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DO - 10.1016/j.jmmm.2004.04.066

M3 - Conference article

AN - SCOPUS:5744222358

SN - 0304-8853

VL - 282

SP - 283

EP - 286

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-3

T2 - International Symposium on Advanced Magnetic Technologies

Y2 - 13 November 2003 through 16 November 2003

ER -

Impedance spectra of field-aligned CrO2 needle-shape powders

摘要

ASJC Scopus subject areas

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Impedance spectra of field-aligned CrO₂ needle-shape powders