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Author

Berry B

Bio: Berry B is an academic researcher from IBM. The author has contributed to research in topics: Young's modulus. The author has an hindex of 1, co-authored 1 publications receiving 20 citations.

Papers
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Patent
Berry B1, Pritchet Walter Clifford1
30 Dec 1971
TL;DR: In this article, the authors used the change in Young's modulus of elasticity which occurs for certain materials with applied magnetic field, known as the Delta E-effect, to control the vibrational frequency of an electromechanical oscillator.
Abstract: Through the practice of this invention there is achieved control of the vibrational frequency of an electromechanical oscillator. This is achieved by utilizing the change in Young''s modulus of elasticity which occurs for certain materials with applied magnetic field, known as the Delta E-effect. By selective annealing in the presence of specially directed magnetic field, the Delta E-effect is selectively altered along specific directions in the vibrational member. Additionally, by control of the Delta E-effect of a sonic delay line, there is achieved control of the delay time for an acoustic pulse propagating therein.

20 citations


Cited by
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Patent
02 Jun 1978
TL;DR: Amorphous magnetic metal alloys are processed by annealing at temperatures sufficient to achieve stress relief and cooling in directed magnetic fields or in zero magnetic fields as mentioned in this paper, and the ac and dc properties of magnetic cores produced in accordance with the processes of the invention may be tailored to match those of a wide range of magnetic alloys.
Abstract: Amorphous magnetic metal alloys are processed by annealing at temperatures sufficient to achieve stress relief and cooling in directed magnetic fields or in zero magnetic fields. The ac and dc properties of magnetic cores produced in accordance with the processes of the invention may be tailored to match those of a wide range of magnetic alloys. Alloys processed in accordance with the invention provide improved performance in inductors, transformers, magnetometers, and electrodeless lamps.

81 citations

Patent
14 May 1976
TL;DR: In this paper, an amorphous low magnetostriction alloys of the general formula (Co a Fe b T c ) i X j, the "metallic" constituents thereof being within the parenthetical expression are described.
Abstract: The disclosed magnetic devices, including a magnetically coupled conducting path, incorporate amorphous, low magnetostriction alloys of the general formula (Co a Fe b T c ) i X j , the "metallic" constituents thereof being within the parenthetical expression. T, in the formulation, is selected from among Ni, Cr, Mn, V, Ti, Mo, W, Nb, Zr, Pd, Pt, Cu, Ag and Au, X being at least one "glass former" selected from among P, Si, B, C, As, Ge, Al, Ga, In, Sb, Bi and Sn. The "metallic" constituents comprise from 70-90 atomic percent of the alloy with cobalt being present in an amount of at least 70 atomic percent of the "metallic" constituents. The described material is prepared by rapid cooling from the liquid, directly to the shape needed for fabrication of the device (e.g., tape to be wound to form an inductor core). When the amorphous material is fabricated to its finished geometry, raised to a temperature somewhat below its crystallization temperature and quenched in a high heat of vaporization liquid (e.g., water), the permeability is greatly improved. An exemplary alloy was shown to possess properties, in some respects, equivalent to those of Supermalloy, an alloy of much more complex manufacture.

59 citations

Patent
02 Mar 1976
TL;DR: In this paper, a flexible electromagnetic shield is provided, consisting of interlaced filaments of at least one glassy metal alloy, with a maximum permeability of about 50,000 and a coercivity of less than about 0.08 Oe.
Abstract: A flexible electromagnetic shield is provided. The shield comprises interlaced filaments of at least one glassy metal alloy. The glassy alloy has a maximum permeability of at least about 50,000 and a coercivity of less than about 0.08 Oe.

51 citations

Patent
03 Dec 1996
TL;DR: In this article, a method of measuring physical properties using a cantilever is described, which involves bringing a tip attached at one end of a CCA into contact with a sample and causing a vibrational force of a frequency between 10 and 1000 times the fundamental resonance frequency of the CCA.
Abstract: A method of measuring physical properties using a cantilever comprises bringing a tip attached at one end of a cantilever into contact with a sample and causing a vibrational force of a frequency between 10 and 1000 times the fundamental resonance frequency of the cantilever to act on the cantilever.

48 citations

Patent
02 Jul 1998
TL;DR: In this article, a ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system has improved magnetoresonant properties and/or reduced eddy current losses by virtue of being annealed so that the resonator has a fine domain structure with a domain width less than about 40 μm.
Abstract: A ferromagnetic resonator for use in a marker in a magnetomechanical electronic article surveillance system has improved magnetoresonant properties and/or reduced eddy current losses by virtue of being annealed so that the resonator has a fine domain structure with a domain width less than about 40 μm, or less than about 1.5 times the thickness of the resonator. This produces in the resonator an induced magnetic easy axis which is substantially perpendicular to the axis along which the resonator is operated magnetically by a magnetic bias element also contained in the marker. The annealing which produces these characteristics can take place in a magnetic field of at least 1000 Oe, oriented at an angle with respect to the plane of the material being annealed so that the magnetic field has a significant component perpendicular to this plane, a component of at least about 20 Oe across the width of the material, and a smallest component along the direction of transport of the material through the annealing oven.

47 citations