摘要:
Articles according to the invention exemplarily comprise a magnetically hard oxide layer in contact with a magnetically soft oxide layer, with spins in the latter at room temperature exchange-coupled to the (oriented) spins in the former. Exemplarily both materials are ferrimagnetic spinel-type oxides, e.g., CoFe.sub.2 O.sub.4 /(Mn, Zn)Fe.sub.2 O.sub.4. Material combinations according to the invention can be advantageously used in high frequency circuit components such as inductors, since the magnetically soft layer can be in a substantially single domain state even after exposure to a magnetic field of considerable strength, e.g., up to about 500 Oe.
摘要翻译:根据本发明的制品示例性地包括与磁性软氧化物层接触的磁性硬氧化物层,其中后者中的自旋在室温下与前者中的(取向的)自旋交换耦合。 示例性地,两种材料是亚铁磁性尖晶石型氧化物,例如CoFe 2 O 4 /(Mn,Zn)Fe 2 O 4。 根据本发明的材料组合可以有利地用于诸如电感器的高频电路部件中,因为即使在暴露于相当强度的磁场(例如高达约500Oe)之外,磁软层也可处于基本上单一的畴状态 。
摘要:
Applicants have discovered that films of conductively doped GaInO.sub.3 grown on substrates by pulsed laser deposition have conductivity comparable to conventional wide band-gap transparent conductors while exhibiting superior light transmission, particularly in the green and blue wavelength regions of the visible spectrum. Substrate temperatures ranged from room temperature to 350.degree. C. in an ambient containing oxygen at partial pressure in the range 0.1 mTorr to 100 mTorr. The preferred laser source was an excimer laser operating in the deep ultraviolet.
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.
摘要翻译:如果在常规基板主体(例如,SrTiO 3,立方氧化锆,Si)上沉积适当的模板层,则不需要高温(> 500℃)处理即可获得具有优异结晶和磁性能的铁氧体膜,铁素体沉积在 退火模板。 该模板是尖晶石结构金属氧化物,其晶格常数在铁素体的晶格常数的0.79-0.89nm范围内,优选在约0.015nm范围内。 示例性地,在400℃下沉积在(100)SrTiO 3上的CoCr 2 O 4模板上沉积NiFe 2 O 4膜。 铁氧体膜在4000Oe下的磁化强度是同样沉积的比较铁氧体膜(SrTiO3上的NiFe2O4)的磁化强度的两倍,并且与在1000℃退火的SrTiO 3上的NiFe 2 O 4膜的磁化相当。 生产具有良好磁性能的铁氧体膜,而不需要高温处理,特别是可以在设计用于在相对高的频率(例如> 10MHz)操作的Si芯片上制造车载磁性部件(例如,电感器),甚至在约100MHz。