发明授权
US5728421A Article comprising spinel-structure material on a substrate, and method
of making the article
失效
在基材上包含尖晶石结构材料的制品以及制造该制品的方法
- 专利标题: Article comprising spinel-structure material on a substrate, and method of making the article
- 专利标题(中): 在基材上包含尖晶石结构材料的制品以及制造该制品的方法
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申请号: US697402申请日: 1996-08-23
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公开(公告)号: US5728421A公开(公告)日: 1998-03-17
- 发明人: Ernst Michael Gyorgy , Julia Mae Phillips , Yuri Suzuki , Robert Bruce van Dover , Suzanne Rachel Gyorgy
- 申请人: Ernst Michael Gyorgy , Julia Mae Phillips , Yuri Suzuki , Robert Bruce van Dover , Suzanne Rachel Gyorgy
- 申请人地址: NJ Murray Hill
- 专利权人: Lucent Technologies Inc.
- 当前专利权人: Lucent Technologies Inc.
- 当前专利权人地址: NJ Murray Hill
- 主分类号: C30B23/06
- IPC分类号: C30B23/06 ; H01F10/18 ; H01F10/193 ; H01F10/20 ; H01F10/30 ; H01F17/04 ; H01F41/20 ; H01L21/822 ; H01L27/04 ; H01L29/34 ; B05D5/12 ; C23C16/40
摘要:
Ferrite films having excellent crystalline and magnetic properties are obtainable without high temperature (>500.degree. C.) processing if an appropriate template layer is deposited on a conventional substrate body (e.g., SrTiO.sub.3, cubic zirconia, Si), and the ferrite is deposited on the annealed template. The template is a spinel-structure metal oxide that has a lattice constant in the range 0.79-0.89 nm, preferably within about 0.015 nm of the lattice constant of the ferrite. Exemplarily, a NiFe.sub.2 O.sub.4 film was deposited at 400.degree. C. on a CoCr.sub.2 O.sub.4 template which had been deposited on (100) SrTiO.sub.3. The magnetization of the ferrite film at 4000 Oe was more than double the magnetization of a similarly deposited comparison ferrite film (NiFe.sub.2 O.sub.4 on SrTiO.sub.3), and was comparable to that of a NiFe.sub.2 O.sub.4 film on SrTiO.sub.3 that was annealed at 1000.degree. C. The ability to produce ferrite films of good magnetic properties without high temperature treatment inter alia makes possible fabrication of on-board magnetic components (e.g., inductor) on Si chips designed for operation at relatively high frequencies, e.g., >10 MHz, even at about 100 MHz.