摘要:
A manufacture method that can manufacture ZnO based compound semiconductor crystal of good quality. A ZnO substrate is prepared to have a principal surface made of a plurality of terraces of (0001) planes arranged stepwise along an m-axis direction, the envelop of the principal surface being inclined relative to the (0001) plane by about 2 degrees or less. ZnO based compound semiconductor crystal is grown on the principal surface.
摘要:
A housing device 100 for plural components that can be arrayed one on top of another includes a support 101 for housing the components on introducing the latter into the support, and a locking unit 102 configured for preventing the components housed in the support 101 from being moved out of the support 101. The housing device 100 also includes a base member 103 having an unlocking support 101 which is adapted to release the state of the locking unit 102 prohibiting the movement of the components housed in the support 101. The components to be housed are usually locked by the locking unit 102. The locked state of the components is established by simply placing the components into the support and is released by the unlocking support 101. A larger number of the components can be housed on top of each other if so desired.
摘要:
A manufacture method that can manufacture ZnO based compound semiconductor crystal of good quality. A ZnO substrate is prepared to have a principal surface made of a plurality of terraces of (0001) planes arranged stepwise along an m-axis direction, the envelop of the principal surface being inclined relative to the (0001) plane by about 2 degrees or less. ZnO based compound semiconductor crystal is grown on the principal surface.
摘要:
A manufacture method that can manufacture ZnO based compound semiconductor crystal of good quality. A ZnO substrate is prepared to have a principal surface made of a plurality of terraces of (0001) planes arranged stepwise along an m-axis direction, the envelop of the principal surface being inclined relative to the (0001) plane by about 2 degrees or less. ZnO based compound semiconductor crystal is grown on the principal surface.
摘要:
An objective of the present invention is to provide a zinc oxide (ZnO) single crystal whose electroconductivity is excellent and which has a high quality. The invention relates to a zinc oxide single crystal whose concentration of metals other than zinc in the crystal fulfills the following equation: [−cM]/[+cM]≧3wherein M is a metal other than zinc, [−cM] is a concentration of M in a −c region in the zinc oxide crystal, and [+cM] is a concentration of M in a +c region in the zinc oxide crystal.
摘要:
A method and an apparatus for visualizing an elastic wave propagation in a solid substance can be applied to a subject substance which is any one of a transparent body and an opaque body, and can detect SV waves (transverse waves) and SH waves (transverse waves) in elastic wave motion modes, and longitudinal waves, surface waves, and creeping waves. The visualization method comprises the steps of: generating elastic waves in a solid substance in response to electric signals; measuring a quantity of stress change in the solid substance in connection with elastic waves propagation in the solid substance; synchronizing a transmission timing of the electric signals with a measurement timing of the stress change; carrying out measurement while scanning a sensor; and imaging wave fronts of the elastic waves propagated in the solid substance by synchronously indicating the stress change as a function of time. The visualization apparatus comprises an elastic wave generator (8) for generating elastic waves in a solid substance (9) in response to an electric signals; an electric signal transmitter (7) for transmitting electric signals to the elastic wave generator (8); a sensor (1) for measuring elastic waves propagated in the solid substance; a sensor scanner (3) for controlling a scanning position of said sensor; a detected-signal recorder (2) for receiving and recording detected-signals from the sensor (1); a synchronizing circuit (10) for sending the detected-signals from the sensor (1) to the recorder (1) in synchronization with timing signals from the sensor scanner (3) and electric signal transmitter (7); and an elastic wave stress distribution display (4) for imaging stress distribution signals of the detected-signals from the detected-signal recorder (2).
摘要:
A manufacture method that can manufacture ZnO based compound semiconductor crystal of good quality. A ZnO substrate is prepared to have a principal surface made of a plurality of terraces of (0001) planes arranged stepwise along an m-axis direction, the envelop of the principal surface being inclined relative to the (0001) plane by about 2 degrees or less. ZnO based compound semiconductor crystal is grown on the principal surface.
摘要:
Provided is a single crystal with a hexagonal wurtzite structure which is useful as a substrate for various devices and has high purity and is uniform. The single crystal with a hexagonal wurtzite structures which is obtained by a crystal growth on at least an m-plane of a columnar seed crystal and represented by AX (A representing an electropositive element and X representing an electronegative element) is characterized in that a variation in the concentration of a metal other than the electropositive element A and having a concentration of 0.1 to 50 ppm is within 100%.