EPJ Web Conf.
Volume 132, 2017XXV-th Congress on Spectroscopy
|Number of page(s)||2|
|Published online||13 December 2016|
Phase transitions and exchange interactions in the SmCr3(BO3)4 crystal
1 Institute for Spectroscopy RAS, 108480 Troitsk, Moscow, Russia
2 P.N. Lebedev Physical Institute RAS, 119991 Moscow, Russia
3 A.M. Prokhorov General Physics Institute RAS, 119991 Moscow, Russia
4 M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
5 Kazan Federal University, 420008 Kazan, Russia
* Corresponding author: firstname.lastname@example.org
Published online: 13 December 2016
Spectroscopic investigation and specific heat and magnetic susceptibility measurements of SmCr3(BO3)4 crystals were performed. The spectra of the Sm3+ and Cr3+ ions in samarium chromium borate were calculated and parameters of the exchange interactions between the nearest chromium ions, chromium and samarium ions were determined. Three phase transitions were observed at the temperatures T1 = 7.8 ± 0.5 К, T2 = 6.7 ± 0.5 К, and T3 = 4.3 ± 0.2 К, their nature is discussed. The crystal structures with different space symmetry groups R32 and C2/c were found to coexist in a SmCr3(BO3)4 single crystal.
© The Authors, published by EDP Sciences, 2017
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