Abstract
The temperature variation of the thermal expansion coefficient, α, of cubic and hexagonal Laves phase compounds RMn2(R=Gd ÷ Lu and Y) was measured in a wide temperature range 5-900 K by the X-ray diffraction and dilatometric methods. The value of α is substantially enhanced, up to 55x10-6 K-1, in the paramagnetic region. At high temperatures, 600–800 K, α passes over a maximum and decreases with a further increase of temperature. Some change in α(T) depending on the type of the rare earth ion was discovered suggesting the instability of the Mn electronic structure related to the strong temperature dependence of the mean squared amplitude of spin fluctuations.
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References
Shiga, M. (1993) Magnetic Ordering and Frustration in Itinerant Systems: RMn2, JMMM 129, 17–25.
Andreev, A.V. (1995) Handbook on Magnetic Materials, 8, 59–175, Elsevier Sci. Publ. B.V., North-Holland, Amsterdam.
Shimizu, M. (1981) Intinerant Electron Magnetism. Rep. Prog. Phys., 44 329–409.
Morya, T. (1985) Spin Fluctuations in Itinerant Electron Magnetism, Springer, Berlin.
Takahashi, Y. and Morya, T. (1983) On the Spin Fluctuations in Weak ItinerantFerromagnets, J Phys. Soc. Jap., 52 4342–4348.
Shiga, M. (1987) Magnetism and Spin Fluctuations of Laves Phase Manganese Compounds Physica B, BC 149 293–305.
Dubenko, LS., Gaidukova, I.Yu., Granovsky, S.A., Gratz, E., Gurjazkas, D., Markosyan, A.S., and Muller, H. (1997) Strongly Enhanced Thermal Expansion in Binary Y-Mnlntermetallic Compounds YMn2, Y6Mn23 and YMn12, Sol. State Commun., 103 495–499.
Shiga, M., Wada, H., Nakamura, H., Deportes, J., Ouladdiaf. B., and Ziebeck, K.R.A. (1988) Giant Spin Fluctuations in YMn2 and Related Compounds, J Phys. Col., C8–49. 241–246.
Shiga, M., Wada, H., Nakamura, H.. Yoshimura, K., and Nakamura. Y., (1987) Characteristic Spin Fluctuations in Y(Mn1-xAlx)2 J Phys. F., 17 1781–1793.
Dubenko, I.S., Granovsky, S.A., Gratz, E., Levitin. R.Z., Lindbaum, A. and Markosyan, A.S. (1996) Enhanced Paramagnetic Thermal Expansion of the Intermetallic Compounds Y6 (Mn1-xFex)23,J Magn. Magn. Mater., 157/158 629–630.
Gratz, E. and Lindbaum, A. (1994) The Influence of the Magnetic State on the Thermal Expansion in 1:2 Rare Earth Intermetallic Compounds, JMMM,137115–121.
Iandelli, A. and Palenzona, A. (1979) Handbook on the Physics and Chemistry of Rare Earths, 5, Elsevier Science Publishers B.V., North-Holland, Amsterdam.
Gaidukova, I.Yu., Kovalev V.V., Markosyan, A.S., Menshikov A.Z., and Pirogov, A.N. (1988) On the Nature of the Phase Transition in YMn2, JMMM 72 357–359.
Gaidukova, I.Yu., Krugliashov, S.A., Markosyan, A.S., Levitin, R.Z., Pastushenkov, Yu.G., and Snegirev V.V. (1983) Manganese Subsystem Metamagnetism in RMn2 Intermetallic Compounds, Zh. Eksp. Theor. Fiz., 84 1858–1867.
Wasserman, E.F. (1990) Ferromagnetic Materials, 5, 237–322,Elsevier Science Publishers B.V., North-Holland, Amsterdam.
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Dubenko, I.S. et al. (1998). High Temperature Thermal Expansion of RMn2 Intermetallic Compounds with Heavy Rare Earth Elements. In: Wagner, D., Brauneck, W., Solontsov, A. (eds) Itinerant Electron Magnetism: Fluctuation Effects. NATO Science Series, vol 55. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-5080-4_14
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DOI: https://doi.org/10.1007/978-94-011-5080-4_14
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