Iowa State University Research Foundation Inc

John E Snyder

David C Jiles

R William McCallum

Kevin W Dennis

Carl R Schwichtenberg

Chester C H Lo

Andrew P Ring

Jason A Paulsen

Keith A Bormann

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 for iron or cobalt to form substituted cobalt ferrite that provides mechanical properties that make the substituted cobalt ferrite material effective for use as sensors and actuators. 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.

Cobalt ferrite based magnetostrictive materials for magnetic stress sensor and actuator applications

The present invention provides magnetostrictive composites that include an oxide ferrite and metallic binders which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.

Material for magnetostrictive sensors and other applications based on ferrite materials

The present invention provides magnetostrictive compositions that include an oxide ferrite which provides mechanical properties that make the magnetostrictive compositions effective for use as sensors and actuators.

Material for magnetostrictive sensors and other applications based on

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Ames, IA, United States of America

John E Snyder