Abstract
A study is reported of the anomalous broadening of Mn2+ EPR lines on the high-temperature side of the paraelectric-incommensurate phase transition in Rb2ZnCl4 crystals. It is shown that the resonant-line broadening is inhomogeneous and due to the contribution of low-frequency fluctuations corresponding to the central peak in the elementary-excitation spectrum. The data obtained have permitted us to obtain the critical correlation-length exponent ν=0.64±0.02 corresponding to the 3d XY model of Heisenberg.
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References
K. A. Müller and J. C. Fayet, in Structural Phase Transitions II, edited by K. A. Müller and H. Thomas (Springer, Berlin, 1991), V. 45, p. 1.
K. A. Müller, in Dynamical Critical Phenomena and Related Topics, Lecture Notes in Physics (Springer, Berlin, 1979), V. 104, p. 210.
R. Blinc, Ferroelectrics 20, 121 (1978).
S. A. Al'tshuler and B. M. Kozyrev, Electronic Paramagnetic Resonance in Intermediate-Group Compounds [in Russian] (Nauka, Moscow, 1972).
G. F. Reiter, W. Berlinger, K. A. Müller, and P. Heller, Phys. Rev. B 21, 1 (1980).
A. U. Sheleg and V. V. Zaretskii, in Incommensurate Phases in Dielectric Materials (North-Holland, Amsterdam, 1986), p. 367.
K. Itoh, A. Hinasada, H. Matsunaga, and E. Nakamura, J. Phys. Soc. Jpn. 52, 664 (1983).
K. Gesi and M. Iizumi, J. Phys. Soc. Jpn. 46, 697 (1979).
T. M. Bochkova, O. E. Bochkov, S. A. Flerova, and M. P. Trubitsyn, Fiz. Tverd. Tela (Leningrad) 26, 2170 (1984) [Sov. Phys. Solid State 26, 1315 (1984)].
A. Kaziba, M. Pezeril, J. Emery, and J. C. Fayet, J. Phys. Lett. (Paris) 46, L387 (1985).
M. Pezeril, J. Emery, and J. C. Fayet, J. Phys. Lett. (Paris) 41, L499 (1980).
A. Abragam, The Principles of Nuclear Magnetism [Clarendon Press, Oxford, 1961; IL, Moscow, 1963], 551 pp.
Th. von Waldkirch, K. A. Müller, and W. Berlinger, Phys. Rev. B 7, 1052 (1973).
R. Blinc, Phys. Rep. 79, 331 (1981).
J. J. L. Horikx, A. F. M. Arts, and H. W. de Wijn, Phys. Rev. B 37, 7209 (1988).
A. D. Bruce and R. A. Cowley, Structural Phase Transitions [Taylor & Francis, London, 1981; Mir, Moscow, 1984], 407 pp.
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Fiz. Tverd. Tela (St. Petersburg) 41, 122–125 (January 1999)
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Trubitsyn, M.P., Pastukhov, V.I. & Bochkova, T.M. Critical slowing of local fluctuations near the paraelectric-incommensurate phase transition in Rb2ZnCl4 . Phys. Solid State 41, 108–111 (1999). https://doi.org/10.1134/1.1130738
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DOI: https://doi.org/10.1134/1.1130738