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Temperature dependence of the current-voltage characteristics of metal-semiconductor field-effect transistors in n-type β-SiC grown via chemical vapor deposition (1987)

Kong, H. S. ; Palmour, J. W. ; Glass, J. T. ; [et al.]

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 51 (1987), S. 442-444

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ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Metal-semiconductor field-effect transistors (MESFET's) have been fabricated in an unintentionally doped, n-type β-SiC thin film grown by chemical vapor deposition (CVD). This n-type layer was deposited on a monocrystalline p-type β-SiC (100) CVD layer previously grown on a p-type Si (100) substrate. The buried p layer allowed the devices to be fabricated several microns away from the SiC/Si interface region which contained numerous defects formed as a result of the poor lattice match and different coefficients of thermal expansion between SiC and Si. Thermally evaporated Au was utilized for the gate contact. Sputtered TaSi2 was employed for the source and drain contacts. The gate lengths and channel depths of these MESFET's were 3.5 and 0.60 μm, respectively. Saturation of the drain currents was achieved at room temperature. Furthermore, the current-voltage characteristics, measured from 298 to 623 K for the first time, indicated that these MESFET's performed reasonably well throughout this temperature range. The maximum transconductance obtained was 1.6 mS/mm; the value of this parameter decreased with temperature.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.98416

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Immunoreactive luteinizing hormone-containing neurons in the brain of the white-footed mouse,Peromyscus leucopus (1987)

Glass, J. D. ; McClusky, M. E.

Springer

Cellular and molecular life sciences 43 (1987), S. 188-190

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ISSN: 1420-9071

Keywords: Luteinizing hormone ; immunocytochemistry ; brain ; white-footed mouse

Source: Springer Online Journal Archives 1860-2000

Topics: Biology , Medicine

Notes: Summary The distribution of immunoreactive LH in the brain of the white-footed mouse (Peromyscus leucopus) was determined using immunocytochemical procedures. Immunoreactive fibers are located in the hypothalamus, preoptic area, septum and amygdala. Stained cell bodies are seen in the arcuate nucleus and preoptic area. Gonadectomy enhances staining for LH in the brain.