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Journal of the Korean Ceramic Society 1979;16(4): 225. |
| $Ti^{+4}$의 첨가가 Ni-Cu-Co Ferrite의 미세구조, 자기이방성, 자왜특성에 미치는 영향 |
| 정용무, 주웅길1 |
한국원자력연구소
1한국과학원 재료공학과 |
| Effects of $Ti^{+4}$ Addition to Ni-Cu-Co Ferrite on Microstructure, Magnetocrystalline Anisotropy and Magnetostriction |
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| ABSTRACT |
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The effect of $Ti^{+4}$ addition on the sinterability, microstructure, and temperature dependence of electromechanical coupling factor of magnetostrictive Ni-Cu-Co ferrite was investigated. The density of Ni-Cu-Co ferrite slightly increased by 2.0 mole % addition of either $TiO_2$ or $Fe_2TiO_4$, but tended to decrease by more than 2.0 mole % addition of $TiO_2$ or $Fe_2TiO_4$. As the content of either $TiO_2$ or $Fe_2TiO_4$ increased, the magnetocrystalline anisotropy compensation temperature also increased. Microstructure studies showed the stable grains when Ni-Cu-Co ferrite was sintered above 1, 20$0^{circ}C$. |
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