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Crystal growth and magnetic reversal mechanism in ferromagnetic nanowire by chain of prolate spheroids model

  • P. Wang
  • , L. Gao
  • , X. Song
  • , S. Yang
  • , L. Wang
  • , R. Murakami
  • Xi'an Jiaotong University
  • Tokushima University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Ferromagnetic nanowire arrays were fabricated into the nanoscale pores of anodic aluminum oxide template using an alternate current electrodeposition method. The nanowires grew from the bottom to top of the pore by chemical reduction deposition. The microstructures of the nanowires were observed as complete single crystalline structure and the subsequent nanowires for different materials grew with special oriented directions. For body-centered cubic Fe nanowires the growth direction is along <231>, and for face-centered cubic Ni nanowres the growth direction is along <002> respectively. The growth of nanowires was considered as a restricted growth model because of the narrow holes environment. The magnetic hysteresis loops were measured by vibration sample magnetometer system from 0 to 10000 Oe. The magnetic reversal mechanism and the maximum coercivity for nanowires arrays were discussed and calculated respectively according to a chain-of-spheres model. The magnetic nanowire arrays are considered have the applications prospects in high density magnetic recording media and high sensitive magnetic sensors.

Original languageEnglish
Title of host publicationMaterials Science and Technology Conference and Exhibition 2009, MS and T'09
Pages153-158
Number of pages6
StatePublished - 2009
EventMaterials Science and Technology Conference and Exhibition 2009, MS and T'09 - Pittsburgh, PA, United States
Duration: 25 Oct 200929 Oct 2009

Publication series

NameMaterials Science and Technology Conference and Exhibition 2009, MS and T'09
Volume1

Conference

ConferenceMaterials Science and Technology Conference and Exhibition 2009, MS and T'09
Country/TerritoryUnited States
CityPittsburgh, PA
Period25/10/0929/10/09

Keywords

  • Anodic aluminum oxide template
  • Crystal growth
  • Magnetic nanowire

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