Premium
Magnetostrictive Ferrites with Small Change in Coupling Coefficient from 0° to 20°C
Author(s) -
BROCKMAN F. G.,
BECK P. W.,
STENECK W. G.
Publication year - 1963
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1963.tb11707.x
Subject(s) - magnetostriction , materials science , composite number , ferrite (magnet) , anisotropy , coupling coefficient of resonators , temperature coefficient , composite material , coupling (piping) , ferrite core , transducer , electromechanical coupling coefficient , condensed matter physics , acoustics , optoelectronics , ceramic , optics , magnetic field , electrical engineering , physics , quantum mechanics , resonator , electromagnetic coil , engineering
Ferrite materials which possess electromechanical coupling coefficients of 30% or more over the temperature interval 0° to 20°C were developed by the control of the various anisotropies. A high order of temperature stability of the coupling coefficient was achieved by a new technique in which a number of ferrites are combined in a composite core structure. Composite transducers made by the technique emerge as single bodies adn not as a composite made up of discrete parts.