Effects of Annealing on the Magnetic Properties of Cold-Worked Nickel- Zinc Ferrite
HONEYWELL CORPORATE TECHNOLOGY CENTER BLOOMINGTON MN
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Magnetic property changes in nickel-zinc ferrite toroids caused by polishing are shown to be recoverable during annealing at temperatures in the range of 500 to 1000C. Recovery is shown to be an athermal process, leading to the speculation that internal strains may be due to coherency effects between stacking faults and the parent ferrite lattice, and that stress-relief under those conditions may not be independent of the presence of a second phase. Some consideration is given to the possibility of using recovery effects to indicate maximum temperature exposure in some type of sensor, but it is concluded that a great deal more work would be needed to develop such an instrument.
- Manufacturing and Industrial Engineering and Control of Production Systems
- Electricity and Magnetism
- Solid State Physics