Tailoring of the Magnetic Properties of SmCo5:Nb0.33Cr0.67 Nanocomposites Using Mechanical Alloying

Richard L. Schalek, Diandra L. Leslie-Pelecky, John Knight, D. J. Sellmyer, Steven C. Axtell, Richard L. Schalek, John Knight, Steven C. Axtell, Diandra L. Leslie-Pelecky, D. J. Sellmyer

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Nanocomposite structures composed of ferromagnetic particles dispersed in a matrix are systems in which the magnetic properties can be tailored by varying the size and spacing of the ferromagnetic particles. Nanocomposites of SmCo5 in a non-magnetic Nb0.33Cr0.67 matrix exhibit a wide variety of magnetic properties. SmCo5 powder is premilled prior to mechanical alloying. The premilling results in a maximum coercivity of 16 kOe after 2 hours of milling, and an enhanced remanence ratio. Both features may be due to exchange anisotropy and/or exchange coupling between hard and soft ferromagnetic phases. The nanocomposite samples show that, when the SmCo5 particulates are small enough, the primary effect of alloying is to disperse them throughout the matrix with no further refinement of size.

Original languageEnglish (US)
Pages (from-to)3772-3774
Number of pages3
JournalIEEE Transactions on Magnetics
Volume31
Issue number6
DOIs
StatePublished - Nov 1995

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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