中国物理B ›› 2010, Vol. 19 ›› Issue (1): 17701-017701.doi: 10.1088/1674-1056/19/1/017701

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Orientation-dependent electromagnetic properties of basalt fibre/nickel core--shell heterostructures

袁杰1, 康玉清2, 曹茂盛2, 房晓勇2   

  1. (1)School of Information Engineering, Central University for Nationality, Beijing 100081, China; (2)School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • 收稿日期:2009-05-21 修回日期:2009-05-26 出版日期:2010-01-15 发布日期:2010-01-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 50872159), the National Defense Pre-Research Foundation of China (Grant Nos. 513180303 and A2220061080), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 2004007021).

Orientation-dependent electromagnetic properties of basalt fibre/nickel core--shell heterostructures

Kang Yu-Qing(康玉清)a), Cao Mao-Sheng(曹茂盛)a)†, Yuan Jie(袁杰)b)‡, and Fang Xiao-Yong(房晓勇)a)   

  1. a School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China; b School of Information Engineering, Central University for Nationality, Beijing 100081, China
  • Received:2009-05-21 Revised:2009-05-26 Online:2010-01-15 Published:2010-01-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 50872159), the National Defense Pre-Research Foundation of China (Grant Nos. 513180303 and A2220061080), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 2004007021).

摘要: The influence of orientation on electromagnetic properties of basalt fibre/nickel core--shell heterostructures prepared by a simple electroless plating method is investigated. For comparison, the same investigation is also performed on naked basalt fibres. For electromagnetic measurement, the directions of basalt fibre/nickel and naked basalt fibres are parallel, random and perpendicular to the direction of external electric field, termed E_\vert\vert sample, random sample and E sample, respectively. Electromagnetic anisotropy can be clearly observed in the basalt fibre/nickel core--shell heterostructures, while electromagnetic properties of naked basalt fibres are unrelated to the orientation. The E basalt fibre/nickel shows the highest dielectric loss but the lowest magnetic loss, and E|| basalt fibre/nickel exhibits the highest magnetic loss but the lowest dielectric loss. The dielectric loss of E basalt fibre/nickel is several times as large as that of E|| basalt fibre/nickel, which could be attributed to the increase of polarization relaxation time as a consequence of the nanosize-confinement effect. The magnetic loss of E|| basalt fibre/nickel is even one order of magnitude higher than that of E basalt fibre/nickel, which originates mainly from the natural magnetic resonance of basalt fibre/nickel core--shell heterostructures.

Abstract: The influence of orientation on electromagnetic properties of basalt fibre/nickel core--shell heterostructures prepared by a simple electroless plating method is investigated. For comparison, the same investigation is also performed on naked basalt fibres. For electromagnetic measurement, the directions of basalt fibre/nickel and naked basalt fibres are parallel, random and perpendicular to the direction of external electric field, termed E||  sample, random sample and E sample, respectively. Electromagnetic anisotropy can be clearly observed in the basalt fibre/nickel core--shell heterostructures, while electromagnetic properties of naked basalt fibres are unrelated to the orientation. The E basalt fibre/nickel shows the highest dielectric loss but the lowest magnetic loss, and E|| basalt fibre/nickel exhibits the highest magnetic loss but the lowest dielectric loss. The dielectric loss of E basalt fibre/nickel is several times as large as that of E|| basalt fibre/nickel, which could be attributed to the increase of polarization relaxation time as a consequence of the nanosize-confinement effect. The magnetic loss of E|| basalt fibre/nickel is even one order of magnitude higher than that of E basalt fibre/nickel, which originates mainly from the natural magnetic resonance of basalt fibre/nickel core--shell heterostructures.

Key words: one-dimensional materials, heterostructure, electromagnetic property, orientation

中图分类号:  (Dielectric loss and relaxation)

  • 77.22.Gm
75.60.-d (Domain effects, magnetization curves, and hysteresis) 77.22.Ej (Polarization and depolarization) 81.15.Pq (Electrodeposition, electroplating)