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17 Aug 1987

Volume 51, Issue 7, pp. 469-551

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Duplex coatings for the protection of magneto‐optic alloys against oxidation and corrosion

R. P. Frankenthal, R. B. van Dover, and D. J. Siconolfi

Appl. Phys. Lett. 51, 542 (1987); http://dx.doi.org/10.1063/1.98393 (3 pages) | Cited 4 times

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Thin films of Fe or Co and rare‐earth metals, such as Tb and Gd, are being developed as high density, mass memory storage media in magneto‐optic devices. It is shown that a 10‐nm duplex film consisting of a metal that is passivated in air, such as Cr or Al, and a diffusion barrier, such as Nb, will protect these alloys against oxidation and corrosion at temperatures up to at least 200 °C. The duplex film is better than a single passivated metal layer, which may interdiffuse with the alloy, or than a dielectric, which may be reduced by the reactive rare‐earth element.
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81.05.Bx Metals, semimetals, and alloys
85.70.Sq Magnetooptical devices
68.35.Fx Diffusion; interface formation

Low‐frequency magnetic field detection with a magnetostrictive amorphous metal ribbon

M. D. Mermelstein and A. Dandridge

Appl. Phys. Lett. 51, 545 (1987); http://dx.doi.org/10.1063/1.98394 (3 pages) | Cited 12 times

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A low‐frequency magnetometer has been constructed by interfacing a transversely field‐annealed amorphous metal ribbon to a resonating piezoelectric ceramic plate. Power spectrum measurements from 20 mHz to 1.0 Hz demonstrate a minimum detectable field of 8.7 pT/√Hz at 1.0 Hz with an approximate 1/f rise in the noise floor.
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07.55.-w Magnetic instruments and components
85.70.-w Magnetic devices
75.80.+q Magnetomechanical effects, magnetostriction

Far infrared spectroscopy with subpicosecond electrical pulses on transmission lines

R. Sprik, I. N. Duling, C.‐C. Chi, and D. Grischkowsky

Appl. Phys. Lett. 51, 548 (1987); http://dx.doi.org/10.1063/1.98395 (3 pages) | Cited 17 times

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Optically generated and detected electrical pulses on transmission lines in the subpicosecond range have frequencies extending up to 1 THz, thereby covering the far infrared region of the spectrum from 0 to 30 cm−1. We have studied the propagation of these short pulses through a section of the transmission line covered with erbium iron garnet which shows distinct absorption lines in the far infrared at low temperatures (2–30 K). The absorption and dispersion of the garnet modify the shape of the pulse, and the absorption spectrum is obtained by Fourier transforming the propagated pulse shape.
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84.70.+p High-current and high-voltage technology: power systems; power transmission lines and cables
FREE

Erratum: Rotating ring fluxon oscillators: Gyroscopic effects [Appl. Phys. Lett. 49, 1115 (1986)]

Fabio Marchesoni

Appl. Phys. Lett. 51, 551 (1987); http://dx.doi.org/10.1063/1.99011 (1 page)

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Abstract Unavailable
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85.25.-j Superconducting devices
74.50.+r Tunneling phenomena; Josephson effects
06.30.Gv Velocity, acceleration, and rotation
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
99.10.Cd Errata
FREE

Erratum: Picosecond excite‐and‐probe absorption measurement of the intra‐2EgE3/2 ‐state vibrational relaxation time in Ti3+:Al2O3 [Appl. Phys. Lett. 50, 1494 (1987)]

S. K. Gayen, W. B. Wang, V. Petričević, K. M. Yoo, and R. R. Alfano

Appl. Phys. Lett. 51, 551 (1987); http://dx.doi.org/10.1063/1.99012 (1 page)

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Abstract Unavailable
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78.30.Hv Other nonmetallic inorganics
78.40.Ha Other nonmetallic inorganics
71.55.Gs II-VI semiconductors
71.20.Nr Semiconductor compounds
71.20.Ps Other inorganic compounds
99.10.Cd Errata
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