Magnetostriction of the spin-Peierls magnet CuGeO3 |
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| Authors: | G A Petrakovskii A M Vorotynov H Szymczak L Gladczuk |
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| Institution: | (1) L. V. Kirenskii Institute of Physics, Siberian Branch of the Russian Academy of Sciences, 660036 Krasnoyarsk, Russia;(2) Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw, Poland |
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| Abstract: | The temperature dependence of the longitudinal magnetostriction of a CuGeO3 single crystal is measured within the temperature range 4.2–20 K in a magnetic field of 10 T. As the temperature is raised
above 4.2 K, the magnetostriction at first increases from vanishingly small values, attains a maximum at a temperature of
approximately 12 K, and then abruptly drops as the temperature approaches the spin-Peierls transition. The results are interpreted
on the basis of a simple model utilizing the real pattern of magnetic excitations in the spin system.
Fiz. Tverd. Tela (St. Petersburg) 40, 1671–1673 (September 1998) |
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