The magnetostriction constants λ100 and λ111 of Cu ferrite single crystals quenched from 820, 900, and 950 °C were measured by a capacitance method in a temperature range from liquid N2 to room temperatures. For the crystal quenched from 900 °C, the magnetostriction constants λ100 and λ111 at room temperature are −87.3 × 10−6 and 9.8 × 10−6, respectively. The absolute value of the constant λ100 has a maximum (about 200 × 106) near 155 K, and the maximum value decreases with the increase of the quenching temperature, while the value of the constant λ111 decreases monotonically with the increase of the temperature.
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Arai et al. (1974) studied this question.
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