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

File Format

application/pdf

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