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Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications
Iowa State University Patents
  • David C. Jiles, Iowa State University
  • Jason A. Paulsen, Iowa State University
  • John E. Snyder, Iowa State University
  • Chester C.H. Lo, Iowa State University
  • Andrew P. Ring, Iowa State University
  • Keith A. Bormann, Iowa State University
Document Type
Patent
Publication Date
2-5-2008
Abstract

Magnetostrictive material based on cobalt ferrite is described. The cobalt ferrite is substituted with transition metals (such manganese (Mn), chromium (Cr), zinc (Zn) and copper (Cu) or mixtures thereof) by substituting the transition metals foriron or cobalt to form substituted cobalt ferrite that provides mechanical properties that make the substituted cobalt ferrite material effective for use as sensors andactuators. The substitution of transition metals lowers the Curie temperature of the material (as compared to cobalt ferrite) while maintaining a suitable magnetostriction for stress sensing applications.

Patent Number
US 7,326,360 B1
Assignee
Iowa State University Research Foundation, Inc.
Application Number
10/527,660
Date Filed
7-23-2004
Language
en
Date Available
2014-08-10
File Format
application/pdf
Citation Information
David C. Jiles, Jason A. Paulsen, John E. Snyder, Chester C.H. Lo, et al.. "Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications" (2008)
Available at: http://works.bepress.com/david_jiles/81/