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公开(公告)号：US10260132B2
公开(公告)日：2019-04-16
申请号：US15087651
申请日：2016-03-31
发明人： Minoru Ryu , Shinsuke Takeoka , Yoko Orimo , Yoshiki Iwazaki , Kenji Otake
IPC分类号： H01F1/33 , H01F1/24 , H01F1/147 , C22C38/34 , C22C38/28 , C22C38/02 , C22C38/14 , C22C38/06 , B22F1/02
摘要： In an embodiment, a magnetic body includes soft magnetic alloy grains 11 containing Fe, element L, and element M (where element L is Si or Zr and element M is a metal element other than Si or Zr that oxidizes more easily than Fe), as well as oxide film produced from oxidization of part of these grains 11; wherein at least some of the bonds between adjacent soft magnetic alloy grains 11 are by way of the oxide film; the oxide film has an inner film 12a, and an outer film 12b positioned on the outer side of the inner film 12a; and the inner film 12a contains more of element L than element M, while the outer film 12b contains more of element M than element L.
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公开(公告)号：US10431383B2
公开(公告)日：2019-10-01
申请号：US15456991
申请日：2017-03-13
摘要： A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the pair external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and thicknesses of the first internal electrode and the second internal electrode are 0.2 μm or greater.
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公开(公告)号：US10163569B2
公开(公告)日：2018-12-25
申请号：US15456962
申请日：2017-03-13
摘要： A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions is within ±20% of an average of the concentrations of the base metal in the five regions, the five regions being obtained by dividing a region from a location 50 nm away from the first internal electrode of the dielectric layer to a location 50 nm away from the second internal electrode of the dielectric layer in a stacking direction between the first and second internal electrodes equally into five.
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公开(公告)号：US10199169B2
公开(公告)日：2019-02-05
申请号：US15456339
申请日：2017-03-10
摘要： A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode that is coupled to one of the pair of external electrodes; a dielectric layer that is stacked on the first internal electrode and contains BaTiO3 and Ni; and a second internal electrode that is stacked on the dielectric layer, contains Ni, and is coupled to another one of the pair of external electrodes, wherein Ni is contained in five regions, which are equally divided region of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, and a Ni concentration in at least one of end regions located closest to the first internal electrode and the second internal electrode among the five regions is greater than a Ni concentration in a central region of the five regions by 10% or more.
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公开(公告)号：US09721727B2
公开(公告)日：2017-08-01
申请号：US14945388
申请日：2015-11-18
发明人： Chie Kawamura , Tetsuo Shimura , Minoru Ryu , Koichiro Morita , Yukihiro Konishi , Yoshiki Iwazaki
IPC分类号： C04B35/468 , H01G4/12 , H01G4/30 , H01G4/012
CPC分类号： H01G4/1227 , C04B35/4682 , C04B2235/3224 , C04B2235/3239 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3418 , C04B2235/5409 , C04B2235/5445 , C04B2235/5454 , C04B2235/6025 , C04B2235/785 , H01G4/012 , H01G4/12 , H01G4/30
摘要： A multilayer ceramic capacitor has a laminate including dielectric layers laminated alternately with internal electrode layers of different polarities, wherein the dielectric layer contains ceramic grains having Ba, Ti, and X (wherein X represents at least one type of element selected from the group consisting of Mo, Ta, Nb, and W) and a variation in the concentration distribution of X above in the ceramic grain is within ±5%. The multilayer ceramic capacitor can offer excellent service life characteristics even when the thickness of the dielectric layer is 0.8 μm or less, as well as excellent bias characteristics.
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公开(公告)号：USRE47989E1
公开(公告)日：2020-05-12
申请号：US15655800
申请日：2017-07-20
摘要： An acoustic wave device includes: a piezoelectric film made of an aluminum nitride film containing a divalent element and a tetravalent element, or a divalent element and a pentavalent element; and an electrode that excites an acoustic wave propagating through the piezoelectric film.
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公开(公告)号：US09666371B2
公开(公告)日：2017-05-30
申请号：US15002324
申请日：2016-01-20
发明人： Koichiro Morita , Chie Kawamura , Minoru Ryu , Katsuya Taniguchi , Kazumichi Hiroi , Yoshiki Iwazaki
IPC分类号： H01G4/12 , C04B35/468 , H01G4/30 , C04B35/626
CPC分类号： H01G4/1227 , C04B35/4682 , C04B35/62685 , C04B2235/3206 , C04B2235/3215 , C04B2235/3224 , C04B2235/3232 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3418 , C04B2235/5409 , C04B2235/663 , C04B2235/75 , C04B2235/781 , C04B2235/786 , C04B2235/85 , H01G4/30
摘要： A multilayer ceramic capacitor has a laminate comprising dielectric layers stacked alternately with internal electrode layers of different polarities, wherein: the dielectric layers contain ceramic grains whose primary component is BaTiO3; the ceramic grains contain at least one type of donor element (D) selected from the group that includes Nb, Mo, Ta, and W, and at least one type of acceptor element (A) selected from the group that includes Mg and Mn; and the ratio of the concentration of the donor element (D) and that of the acceptor element (A) (D/A) is greater than 1 at the center parts of the ceramic grains, while the D/A ratio is less than 1 at the outer edge parts of the ceramic grains (if A=0, then D/A=∞ and D=A=0 never occurs).
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公开(公告)号：US20160217924A1
公开(公告)日：2016-07-28
申请号：US15002324
申请日：2016-01-20
发明人： Koichiro Morita , Chie Kawamura , Minoru Ryu , Katsuya Taniguchi , Kazumichi Hiroi , Yoshiki Iwazaki
CPC分类号： H01G4/1227 , C04B35/4682 , C04B35/62685 , C04B2235/3206 , C04B2235/3215 , C04B2235/3224 , C04B2235/3232 , C04B2235/3251 , C04B2235/3256 , C04B2235/3258 , C04B2235/3262 , C04B2235/3418 , C04B2235/5409 , C04B2235/663 , C04B2235/75 , C04B2235/781 , C04B2235/786 , C04B2235/85 , H01G4/30
摘要： A multilayer ceramic capacitor has a laminate comprising dielectric layers stacked alternately with internal electrode layers of different polarities, wherein: the dielectric layers contain ceramic grains whose primary component is BaTiO3; the ceramic grains contain at least one type of donor element (D) selected from the group that includes Nb, Mo, Ta, and W, and at least one type of acceptor element (A) selected from the group that includes Mg and Mn; and the ratio of the concentration of the donor element (D) and that of the acceptor element (A) (D/A) is greater than 1 at the center parts of the ceramic grains, while the D/A ratio is less than 1 at the outer edge parts of the ceramic grains (if A=0, then D/A=∞ and D=A=0 never occurs).
摘要翻译： 多层陶瓷电容器具有包含与不同极性的内部电极层交替堆叠的电介质层的层叠体，其中：所述电介质层含有主要成分为BaTiO 3的陶瓷晶粒; 陶瓷晶粒含有选自包括Nb，Mo，Ta和W的基团中的至少一种施主元素（D），以及选自包括Mg和Mn的基团中的至少一种受主元素（A） 并且在陶瓷晶粒的中心部分，施主元素（D）与受主元素（A）的浓度比（D / A）的比例大于1，而D / A比小于1 在陶瓷晶粒的外缘部分（如果A = 0，则D / A =∞，D = A = 0不会发生）。
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公开(公告)号：US10431385B2
公开(公告)日：2019-10-01
申请号：US15457337
申请日：2017-03-13
摘要： A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing a ceramic material and the base metal; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions of a region between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and an average grain size in the dielectric layer is 200 nm or less.
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公开(公告)号：US10431384B2
公开(公告)日：2019-10-01
申请号：US15457026
申请日：2017-03-13
摘要： A multilayer ceramic capacitor includes: a pair of external electrodes; a first internal electrode containing a base metal and coupled to one of the external electrodes; a dielectric layer stacked on the first internal electrode and containing the base metal and a ceramic material mainly composed of barium titanate; and a second internal electrode stacked on the dielectric layer, containing the base metal, and coupled to another one of the external electrodes, wherein a concentration of the base metal in each of five regions, which are equally divided regions between locations 50 nm away from the first and second internal electrodes in a stacking direction between the first and second internal electrodes, is within ±20% of an average of the concentrations of the base metal in the five regions, and an atomic concentration ratio of Mg to Ti is 0 or greater and less than 0.002 in the dielectric layer.
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