摘要:
A method of storing a sputtering target made of lanthanum oxide, wherein a lanthanum oxide target to which a lanthanum fluoride film was formed and lanthanum oxide powder are charged in a vacuum pack with an oxygen transmission rate of 0.1 cm3/m2 per 24 h at 1 atm or less and a moisture vapor transmission rate of 0.1 g/m2 per 24 h or less, and, after charging the target and the powder, the vacuum pack is subject to vacuum suction and sealing for storage. This invention aims to provide technology for enabling the long-term storage of a sputtering target in a usable state by devising the method of storing a target made of an oxide of lanthanum as a rare earth metal, and thereby inhibiting the pulverization phenomenon of the target caused by the hydration (hydroxylation) of such target due to residual air or the inclusion of air, and the pulverization phenomenon caused by the formation of carbonate.
摘要翻译:一种存储由氧化镧制成的溅射靶的方法,其中将形成有氟化镧薄膜的氧化镧靶标和氧化镧粉末在氧气透过率为0.1cm 3 / m 2/24小时的真空包装中装入1 atm以下,每24小时以上的湿气透过率为0.1g / m 2,并且在对靶和粉末进行充电之后,将真空包装真空抽吸并密封保存。 本发明的目的在于提供一种用于通过设计存储由稀土金属的镧氧化物制成的靶的方法,从而能够使溅射靶长期储存在可使用状态的技术,从而抑制靶的粉碎现象 由于残留空气或包含空气的这种目标物的水合(羟基化)引起的,以及由碳酸盐形成引起的粉碎现象。
摘要:
Provided is a method for storing a target comprising a rare earth metal or oxide thereof, wherein oxide of the same rare earth metal as the material of the rare earth metal or its oxide target to be stored is introduced as a desiccant into a container or a film-type seal for storing the target, and the target is stored by sealing the storage container or the film-type seal. This invention aims to provide technology for enabling the long-term storage of a target by devising the method for storing a target comprising a rare earth metal or oxide thereof, and thereby inhibiting the pulverization of the target caused by the oxidation and hydroxylation of such target due to the ingress of air.
摘要:
A method of storing a sputtering target made of lanthanum oxide, wherein a lanthanum oxide target to which a lanthanum fluoride film was formed and lanthanum oxide powder are charged in a vacuum pack with an oxygen transmission rate of 0.1 cm3/m2 per 24 h at 1 atm or less and a moisture vapor transmission rate of 0.1 g/m2 per 24 h or less, and, after charging the target and the powder, the vacuum pack is subject to vacuum suction and sealing for storage. This invention aims to provide technology for enabling the long-term storage of a sputtering target in a usable state by devising the method of storing a target made of an oxide of lanthanum as a rare earth metal, and thereby inhibiting the pulverization phenomenon of the target caused by the hydration (hydroxylation) of such target due to residual air or the inclusion of air, and the pulverization phenomenon caused by the formation of carbonate.
摘要翻译:一种存储由氧化镧制成的溅射靶的方法,其中将形成有氟化镧薄膜的氧化镧靶标和氧化镧粉末在氧气透过率为0.1cm 3 / m 2/24小时的真空包装中装入1 atm以下,每24小时以上的湿气透过率为0.1g / m 2,并且在对靶和粉末进行充电之后,将真空包装真空抽吸并密封保存。 本发明的目的在于提供一种用于通过设计存储由稀土金属的镧氧化物制成的靶的方法,从而能够使溅射靶长期储存在可使用状态的技术,从而抑制靶的粉碎现象 由于残留空气或包含空气的这种目标物的水合(羟基化)引起的,以及由碳酸盐形成引起的粉碎现象。
摘要:
A method of storing a metal lanthanum sputtering target, wherein a surface of a metal lanthanum target to be stored is processed so as to achieve a roughness Ra of 1 μm or less, a lanthanum fluoride coating is formed on the surface thereof, the metal lanthanum target to which the lanthanum fluoride coating was formed is subsequently charged in a vacuum pack with an oxygen transmission rate of 0.1 cm3/m2 per 24 h at 1 atm or less and a moisture vapor transmission rate of 0.1 g/m2 per 24 h or less, and the vacuum pack is thereafter subject to vacuum suction and sealing for storage. This invention aims to provide technology for enabling the long-term storage of a sputtering target in a usable state by devising the method of storing a metal lanthanum target as a rare earth metal, and thereby inhibiting the degradation phenomenon caused by the oxidation of the target due to residual air or the inclusion of air.
摘要翻译:一种金属镧溅射靶的储存方法,其特征在于,对所述被保存金属镧靶的表面进行加工,以达到1μm以下的粗糙度Ra,在其表面形成氟化镧涂层,所述金属镧 随后将其中形成氟化镧涂层的目标装入真空包装中,每1小时或以下,每24小时的氧气透过率为0.1cm 3 / m 2,每24小时或更少的湿气透过率为0.1g / m 2 ,然后将真空包装真空抽吸并密封保存。 本发明的目的在于提供一种技术,通过设计存储金属镧靶作为稀土金属的方法,能够使溅射靶长期保存在可使用状态,从而抑制靶的氧化引起的劣化现象 由于残留空气或包含空气。
摘要:
Provided is a hybrid silicon wafer comprising a structure in which a single-crystal wafer is embedded in a sintered polysilicon wafer. Also provided is a method for manufacturing a hybrid silicon wafer having a structure in which a single-crystal wafer is embedded in a sintered polysilicon wafer, wherein a part of the sintered polysilicon is hollowed, a single crystal ingot is inserted into the hollowed portion, these are mutually bonded through thermal diffusion bonding based on HIP to prepare a complex of the sintered polysilicon and the single-crystal silicon ingot, and the complex is sliced. Thereby provided are a hybrid silicon wafer comprising functions of both the polysilicon wafer and the single-crystal wafer, and a method for manufacturing such a hybrid silicon wafer.
摘要:
Provided is a hybrid silicon wafer comprising a structure in which a single-crystal wafer is embedded in a sintered polysilicon wafer. Also provided is a method for manufacturing a hybrid silicon wafer having a structure in which a single-crystal wafer is embedded in a sintered polysilicon wafer, wherein a part of the sintered polysilicon is hollowed, a single crystal ingot is inserted into the hollowed portion, these are mutually bonded through thermal diffusion bonding based on HIP to prepare a complex of the sintered polysilicon and the single-crystal silicon ingot, and the complex is sliced. Thereby provided are a hybrid silicon wafer comprising functions of both the polysilicon wafer and the single-crystal wafer, and a method for manufacturing such a hybrid silicon wafer.
摘要:
An oxide sintered compact composed of a composite oxide of lanthanum and hafnium, wherein the amount of hafnium contained in the sintered compact is equivalent or more relative to the lanthanum. A method of producing an oxide sintered compact of lanthanum and hafnium, wherein La2(CO3)3 powder and HfO2 powder are used as raw material powder, blending and mixing are performed so that the composition molar ratio of Hf and La becomes 1 to 1.2, the mixed powder is thereafter heated and synthesized in the atmosphere, the synthesized material is subsequently pulverized to obtain powder, and the synthesized powder is thereafter hot pressed into a sintered compact. Since metal lanthanum rapidly bonds with oxygen and decays, and lanthanum oxide bonds with moisture and forms a hydroxide and changes into powder form, there is a problem in that long-term storage is difficult and a sputtering target cannot be used for a practical use. In light of these points, provided is a stable La-containing oxide sintered compact composed of oxides of lanthanum (La) and hafnium (Hf), and in particular provided is a La-containing oxide sputtering target that is suitable for forming a high-k gate insulating film.
摘要:
A lanthanum oxide-based sintered compact having lanthanum oxide as a basic component, wherein the sintered compact contains one or more of titanium oxide, zirconium oxide and hafnium oxide with the remainder being lanthanum oxide and unavoidable impurities. A method of producing a lanthanum oxide-based sintered compact, wherein La2(CO3)3 powder or La2O3 powder as lanthanum oxide raw material powder and one or more of TiO2, ZrO2 and HfO2 powders as an additive oxide are used, blending and mixing are performed so that the composition ratio of metal components of the additive oxide becomes a predetermined value based on the metal conversion, the mixed powder is thereafter heated and synthesized in the atmosphere, the synthesized material is subsequently pulverized to obtain powder, and the synthesized powder is thereafter hot pressed into a sintered compact. This invention prevents the sintered compact from combining with moisture or carbon dioxide gas to form hydroxide or the like and changing into powder form, and enables the long term storage thereof. Moreover, as a result of performing deposition with this sputtering target, oxide for use in a high-k gate insulator film can be efficiently and stably provided.
摘要:
A sputtering target-backing plate assembly obtained by bonding a target material of Mg to a backing plate of Cu—Cr alloy, wherein the target material and the backing plate are bonded via a layer of Ni or an alloy comprising Ni as a main component at the interface therebetween. An object of the present invention is to provide a sputtering target-backing plate assembly that is used when magnesium (Mg) is the sputtering target material, and to resolve problems inherent in magnesium (Mg) and problems related to the selection of a backing plate to be compatible with magnesium by improving the bonding strength between the target and the backing plate in order to improve the sputtering efficiency.
摘要:
A sputtering target-backing plate assembly obtained by bonding a target material of Mg to a backing plate of Cu—Cr alloy, wherein the target material and the backing plate are bonded via a layer of Ni or an alloy comprising Ni as a main component at the interface therebetween. An object of the present invention is to provide a sputtering target-backing plate assembly that is used when magnesium (Mg) is the sputtering target material, and to resolve problems inherent in magnesium (Mg) and problems related to the selection of a backing plate to be compatible with magnesium by improving the bonding strength between the target and the backing plate in order to improve the sputtering efficiency.