Abstract: The coil component includes a coil, a first core having a first magnetic permeability, and a second core having a second magnetic permeability lower than the first magnetic permeability. The first core and the second core form a magnetic path. The coil forms two or more winding windows. The first core contacts with an entirety of one side line extending in a second direction of each of the winding windows, and protrudes from both ends of one side line of at least one of the winding windows. The second core contacts with three side lines other than the one side line of each of the winding windows. A surface resistance of the first core between two points that are 20 mm away from each other is not less than 5 ? after a high-temperature storage test. A drive frequency of the coil component is not less than 20 kHz.

Abstract: A first regrowth layer and a second regrowth layer comprising GaAs having high resistance are regrown on a surface of an etching stop layer exposed to the bottom of a first groove and a second groove, and then n-type InGaAs is regrown on the first regrowth layer and the second regrowth layer, whereby a source region and a drain region configured to make contact with a channel layer are formed in the first groove and the second groove respectively.

Abstract: After a nitride semiconductor layer is formed through crystal-growth of a nitride semiconductor containing Ga in a +c-axis direction on the other substrate, the other substrate on which the nitride semiconductor layer is formed is bonded to a substrate in a state where a surface on which the nitride semiconductor layer of the other substrate is formed is on the side of the substrate (a bonding step). This bonding is performed by bonding the surfaces to be bonded by a known direct bonding technology.

Abstract: A first collector layer is composed of n-type InP (n-InP) doped with Si at a low concentration. A second collector layer is composed of non-doped InGaAs. A base layer is composed of p-type GaAsSb (p+-GaAsSb) doped with C at a high concentration. An emitter layer is composed of a compound semiconductor different from that of the base layer, and has an area smaller than the base layer in a plan view. An emitter layer can be composed of, for example, n-type InP (n-InP) doped with Si at a low concentration.

Abstract: An oxide layer (109) including an oxide of an electrode (108) material is formed by heating in a portion of an electrode (108) in contact with a surface oxidized layer (107). The oxide layer (109) is placed between the electrode (108) and an i-AlGaN layer (106) in contact with both the i-AlGaN layer (106) and the electrode (108).

Abstract: A first barrier layer, a channel layer, a second barrier layer, and a first bonding layer made of high-resistance AlGaN doped with Fe are formed on a first substrate. Thereafter, the first substrate and the second substrate are pasted in a state where the first bonding layer and a second bonding layer made of high-resistance GaN doped with Fe are opposed to each other.

Abstract: A first collector layer is composed of n-type InP (n-InP) doped with Si at a low concentration. A second collector layer is composed of non-doped InGaAs. A base layer is composed of p-type GaAsSb (p+-GaAsSb) doped with C at a high concentration. An emitter layer is composed of a compound semiconductor different from that of the base layer, and has an area smaller than the base layer in a plan view. An emitter layer can be composed of, for example, n-type InP (n-InP) doped with Si at a low concentration.

Abstract: An emitter contact layer, an emitter layer, a base layer, a p-type base layer, a collector layer, and a sub-collector layer are crystal-grown over a first substrate in this order with the main surface as the Group III polar surface. The emitter contact layer includes a nitride semiconductor that is made n-type at a relatively high concentration. The emitter layer includes a nitride semiconductor having a bandgap larger than that of the nitride semiconductor constituting the emitter contact layer. The base layer includes an undoped nitride semiconductor having a bandgap smaller than that of the nitride semiconductor constituting the emitter layer. The p-type base layer includes the same nitride semiconductor as the base layer and made p-type.

Abstract: A first semiconductor layer, a second semiconductor layer, a channel layer, a barrier layer, and a third semiconductor layer are crystal-grown in this order on a first substrate in the +c axis direction, a second substrate is bonded to the side of the barrier layer of the first substrate, and after that, the first substrate is removed, and the first semiconductor layer is selectively thermally decomposed by heating.

Abstract: A first regrowth layer and a second regrowth layer comprising GaAs having high resistance are regrown on a surface of an etching stop layer exposed to the bottom of a first groove and a second groove, and then n-type InGaAs is regrown on the first regrowth layer and the second regrowth layer, whereby a source region and a drain region configured to make contact with a channel layer are formed in the first groove and the second groove respectively.

Abstract: A first barrier layer, a channel layer, a second barrier layer, and a first bonding layer made of high-resistance AlGaN doped with Fe are formed on a first substrate. Thereafter, the first substrate and the second substrate are pasted in a state where the first bonding layer and a second bonding layer made of high-resistance GaN doped with Fe are opposed to each other.

Abstract: A door-equipped vehicle body structure (10) includes a door opening (35) provided to a vehicle (11), a door (40) for opening and closing the door opening (35), and a grip (45) provided to the door (40). The door (40) is provided with a general surface (62) and an upper surface (63). The general surface (62) is a surface extending along a door surface (61). The upper surface (63) is a surface extending from an upper end (62a) of the general surface (62) toward an outside (22) of the vehicle. The grip (45) is provided so as to project upward from the upper surface (63).

Abstract: A door-equipped vehicle body structure (10) includes a door opening (35) provided to a vehicle (11), a door (40) for opening and closing the door opening (35), and a grip (45) provided to the door (40). The door (40) is provided with a general surface (62) and an upper surface (63). The general surface (62) is a surface extending along a door surface (61). The upper surface (63) is a surface extending from an upper end (62a) of the general surface (62) toward an outside (22) of the vehicle. The grip (45) is provided so as to project upward from the upper surface (63).

Abstract: A tailgate-equipped vehicle body structure includes a tailgate for opening and closing a rear opening section provided in a rear section of a vehicle, and a sub door provided on the tailgate for opening and closing a sub door opening section provided in the tailgate. The upper surface of a lower edge portion of the rear opening section and the upper surface of a lower edge portion of the sub door opening section are located in substantially flush with each other.

Abstract: A tailgate-equipped vehicle body structure includes a tailgate for opening and closing a rear opening section provided in a rear section of a vehicle, and a sub door provided on the tailgate for opening and closing a sub door opening section provided in the tailgate. The upper surface of a lower edge portion of the rear opening section and the upper surface of a lower edge portion of the sub door opening section are located in substantially flush with each other.