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1 Apr 1967

Volume 10, Issue 7, pp. 193-212


PARAMETRIC AMPLIFICATION OF MICROWAVES IN SUPERCONDUCTING JOSEPHSON TUNNEL JUNCTIONS

H. Zimmer

Appl. Phys. Lett. 10, 193 (1967); http://dx.doi.org/10.1063/1.1754906 (3 pages) | Cited 28 times

Online Publication Date: 30 November 2004

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Abstract Unavailable

DIFFRACTION OF LIGHT BY ELASTIC WAVES IN YIG

R. W. Dixon and H. Matthews

Appl. Phys. Lett. 10, 195 (1967); http://dx.doi.org/10.1063/1.1754907 (3 pages) | Cited 14 times

Online Publication Date: 30 November 2004

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The first observations of light diffracted by elastic waves propagating in a ferrimagnetic material (yttrium iron garnet) are reported and discussed, and the values of the photoelastic tensor components of YIG are presented.

OBSERVATIONS ON COHERENT ELECTRON SCATTERING IN THIN‐FILM, COLD CATHODES

J. G. Simmons and R. R. Verderber

Appl. Phys. Lett. 10, 197 (1967); http://dx.doi.org/10.1063/1.1754908 (3 pages) | Cited 11 times

Online Publication Date: 30 November 2004

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Further evidence and additional interpretation is presented of the coherent scattering of hot electrons by the polycrystalline electrode of a thin‐film, cold cathode emitter.

REACTIVELY SPUTTERED VANADIUM DIOXIDE THIN FILMS

E. N. Fuls, D. H. Hensler, and A. R. Ross

Appl. Phys. Lett. 10, 199 (1967); http://dx.doi.org/10.1063/1.1754909 (3 pages) | Cited 19 times

Online Publication Date: 30 November 2004

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Thin films of vanadium dioxide have been formed by reactive sputtering of vanadium in an argon atmosphere doped with a partial pressure of oxygen. The films were deposited on sapphire substrates held at 400°C and exhibit a highly oriented polycrystalline monoclinic structure at room temperature. The semiconductor to metal transition is observed at 345°K with a slight hysteresis with temperature reversal.

PARAMETRIC COUPLING BETWEEN ION WAVES AND ELECTROMAGNETIC WAVES

A. Sjölund and L. Stenflo

Appl. Phys. Lett. 10, 201 (1967); http://dx.doi.org/10.1063/1.1754910 (2 pages) | Cited 17 times

Online Publication Date: 30 November 2004

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Parametric coupling between longitudinal ion waves and transverse electromagnetic waves in a plasma is studied. The possibilities of exciting ion waves and electron waves by means of this coupling mechanism are considered, and the growth rates are compared.

MAGNETIC AND OPTICAL PROPERTIES OF TRANSPARENT RbNiF3

M. W. Shafer, T. R. McGuire, B. E. Argyle, and G. J. Fan

Appl. Phys. Lett. 10, 202 (1967); http://dx.doi.org/10.1063/1.1754911 (3 pages) | Cited 27 times

Online Publication Date: 30 November 2004

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Magnetic and optical data on single‐crystal RbNiF3 are presented. We conclude that this material is ferrimagnetic, rather than antiferromagnetic as previously reported, with a transition temperature of 139°K and a saturation moment of 21 emu∕g at 4.2°K. The basal plane is the preferred plane and the out‐of‐plane anisotropy is 106 ergs∕cc. The Faraday rotation measured along the c axis at 77°K and 80% of magnetic saturation exhibits a peak value of 400° per cm at a wavelength of 4950 Å and values of 250° to 50° per cm in the region 5000 to 6000 Å where the optical absorption is lowest.

SCANNING ELECTRON MICROSCOPY OF A P‐16 PHOSPHOR—CATHODOLUMINESCENT AND SECONDARY ELECTRON EMISSION MODES

E. J. Korda, L. H. Pruden, and J. P. Williams

Appl. Phys. Lett. 10, 205 (1967); http://dx.doi.org/10.1063/1.1754912 (2 pages) | Cited 1 time

Online Publication Date: 30 November 2004

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A scanning electron microscope comparison of the microstructure of a P‐16 phosphor powder employing two independent modes, secondary emission, and cathodoluminescence, has been made. For the cathodoluminescent mode, high resolution and efficiency were obtained by a novel technique utilizing a flexible fiber optic rod. Secondary electron emission and cathodoluminescent micrographs of identical areas at 2400× are described.

P‐N JUNCTIONS IN GaP WITH EXTERNAL ELECTROLUMINESCENCE EFFICIENCY ∼2% AT 25°C

R. A. Logan, H. G. White, and F. A. Trumbore

Appl. Phys. Lett. 10, 206 (1967); http://dx.doi.org/10.1063/1.1754913 (3 pages) | Cited 22 times

Online Publication Date: 30 November 2004

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The external electroluminescent quantum efficiency at 25°C of GaP p‐n junctions grown by liquid‐phase epitaxy on solution‐grown substrates may be increased by as much as an order of magnitude by annealing, after growth, at temperatures in the range 400°C–725°C for times ∼16 hr. Typical efficiencies obtained range from 1–2%. The I‐V characteristic consists of two parallel components: a small tunneling current and a recombination current in the space charge region. The effect of annealing is to increase the efficiency in proportion to the decrease in current, at a given bias.

LASER SECOND‐HARMONIC‐INDUCED STIMULATED EMISSION OF ORGANIC DYES

B. B. McFarland

Appl. Phys. Lett. 10, 208 (1967); http://dx.doi.org/10.1063/1.1754914 (2 pages) | Cited 21 times

Online Publication Date: 30 November 2004

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Solutions of several dyes of the fluorescein family have been made to exhibit stimulated emission in the visible when excited by ruby and neodymium second harmonics. Oscillation threshold and conversion efficiencies are given. Depolarization effects in the emission are described.

SPIN‐WAVE INTERACTION WITH A LASER BEAM IN YIG

S. Wang and G. Thomas

Appl. Phys. Lett. 10, 210 (1967); http://dx.doi.org/10.1063/1.1754915 (3 pages) | Cited 2 times

Online Publication Date: 30 November 2004

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Experimental results are presented concerning the interaction of a Nd laser beam with spin waves in YIG in the subsidiary absorption region. The microwave power was held below the threshold for spin‐wave instability. When hit by a laser beam, the sample showed characteristic magnetoelastic and relaxation oscillations. The same oscillations were observed without the laser beam if the microwave power was raised above the threshold for spin‐wave instability. The result provides evidence of spin‐wave excitation in YIG by a laser beam.
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Erratum: Frequency Spectrum of Giant Acoustic Wave Packets Generated in CdS by High Electric Fields

J. Zucker and S. Zemon

Appl. Phys. Lett. 10, 212 (1967); http://dx.doi.org/10.1063/1.1754916 (1 page) | Cited 5 times

Online Publication Date: 30 November 2004

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Abstract Unavailable
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