摘要:
[Problem] When a nonreciprocal device operating at 100 GHz to 300 GHz is to be realized by using a conventional magnetic material of garnet-type ferrite or spinel-type ferrite, a huge permanent magnet is required and, therefore, it is very difficult to achieve a millimeter-wave band nonreciprocal device for practical use.[Solving means] To solve this problem, there is provided a millimeter-wave band nonreciprocal device composed of a magnetic material represented by a formula ε-MxFe2-xO3 (0
摘要:
A titanium oxide particle that can develop non-conventional and novel physical properties, a method for manufacturing the same, and a magnetic memory, an optical information recording medium, and a charge accumulation type memory using the same are provided. A silica-coated titanium hydroxide compound particle is directly produced through a sol-gel technique and not through a reverse micelle technique, and the silica-coated titanium hydroxide compound particle is subjected to a calcination process. Hence, a titanium oxide particle 1 can be provided which can develop non-conventional and novel physical properties such that it does not perform phase transition at a room temperature and a Ti3O5 particle body can always maintain the characteristic as a paramagnetic metal in all temperature ranges unlike conventional bulk bodies that perform phase transition between a non-magnetic semiconductor and a paramagnetic metal at a temperature near about 460 K.
摘要翻译:提供了可以发展非常规和新颖物理性质的二氧化钛颗粒,其制造方法,以及磁存储器,光学信息记录介质和使用其的电荷累积型存储器。 二氧化硅涂覆的氢氧化钛化合物颗粒通过溶胶 - 凝胶技术而不是通过反胶束技术直接制备,并且二氧化硅涂覆的氢氧化钛化合物颗粒经历煅烧过程。 因此,可以提供二氧化钛颗粒1,其可以产生非常规和新的物理性质,使得其在室温下不进行相变,并且Ti 3 O 5颗粒体可以在所有温度范围内始终保持作为顺磁性金属的特性 不同于在接近约460K的温度下执行非磁性半导体和顺磁金属之间的相变的常规体体。
摘要:
Disclosed is a magnetic material having high Hc and High Curie point, which is capable of controlling such magnetic characteristics without requiring rare or expensive raw materials. Specifically disclosed is a magnetic material composed of particles of a magnetic iron oxide which is represented by the following general formula: ε-AxByFe2−x−yO3 or ε-AxByCzFe2−x−y−zO3 (wherein A, B and C each represents a metal excluding Fe and different from each other, satisfying 0
摘要:
To provide a method for improving a coercive force of epsilon-type iron oxide particles, and an epsilon-type iron oxide. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the epsilon type iron oxide.
摘要:
There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.
摘要:
There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.
摘要:
A magnetic material is provided that has an iron oxide phase whose principal phase is a crystal of a structure which has the same space group as ε-Fe2O3 crystal and in which Al is substituted for a portion of the Fe sites of the ε-Fe2O3 crystal. The molar ratio of Al to Fe in the iron oxide phase, when expressed as Al:Fe=x:(2−x), satisfies 0≦x≦1. The value of x is preferably in the range of 0.3 to 0.7. The average particle diameter of the powder determined from a TEM image is preferably 5 to 200 nm, more preferably 10 to 100 nm. The magnetic material has very high practical value because it enables the extremely high coercive force Hc of the ε-Fe2O3 crystal to be regulated to a level enabling utilization in magnetic recording medium and various other applications. The magnetic powder can be produced by a method combining the reverse micelle method and the sol-gel method.
摘要翻译:提供一种磁性材料,其具有氧化铁相,其主相是具有与ε-Fe 2 O 3结晶相同的空间基团的结构的晶体,并且在 该Al取代了ε-Fe 2 O 3结晶的一部分Fe位点。 当以Al:Fe = x:(2-x)表示时,氧化铁相中的Al与Fe的摩尔比满足0
摘要:
A microstructure that can develop non-conventional and novel physical properties and a method for producing the same are provided. Ethanol is added to a mixture solution produced by adding a surfactant solution to a peroxotitanic acid aqueous solution to produce precipitates, and the precipitates collected from the mixture solution are let dried to produce precursor powders 5. The precursor powders 5 are calcined at a predetermined temperature. Accordingly, a microstructure 2 can be produced which is formed of monophasic Ti4O7 in nano size. The microstructure 2 of monophasic Ti4O7 produced in this fashion can be fine-grained in nano size unlike prior-art crystals.
摘要翻译:提供了可以开发非常规和新型物理性能的微结构及其制备方法。 将乙醇加入到通过向过氧钛酸水溶液中加入表面活性剂溶液产生沉淀物而制备的混合溶液中,并将从混合溶液中收集的沉淀物干燥以制备前体粉末5.将前体粉末5在预定温度 。 因此,可以制造由纳米尺寸的单相Ti 4 O 7形成的微观结构2。 与现有技术的晶体不同,以这种方式制造的单相Ti 4 O 7的微观结构2可以以纳米尺寸细粒度。
摘要:
There are provided a fine structural body capable of manifesting an unprecedented property; a manufacturing method thereof; and a magnetic memory, a charge storage memory and an optical information recording medium employing such fine structural body. Unlike conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, there can be provided a fine structural body 1 comprised of Ti3O5, but capable of manifesting an unprecedented property in which a paramagnetic metal property thereof is consistently maintained in all temperature ranges without undergoing phase transition to a nonmagnetic semiconductor.
摘要翻译:提供了能够表现出前所未有财产的优良结构体; 其制造方法; 以及磁存储器,电荷存储存储器和采用这种精细结构体的光学信息记录介质。 与在约460K之间的非磁性半导体和顺磁性金属之间相转移的常规体本体不同,可以提供由Ti 3 O 5组成的精细结构体1,但是能够表现出前所未有的性质,其中顺磁性金属性能始终保持在所有温度 范围,而不会进行到非磁性半导体的相变。