Likholetova M. V. 1, Nikitov S. A.2, Taranov A. V.2, Khazanov E. N. 2, Charnaya E. V. 1, Shevchenko E. V. 1
1St. Petersburg State University, St. Petersburg, Russia
2Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia
Email: e.charnaya@spbu.ru
Results of heat capacity measurements for the YAl3(BO3)4 and GdAl3(BO3)4 single crystals and for their solid solution Y0.83Gd0.17Al3(BO3)4 are presented. The measurements were carried out in a wide temperature range from 1.9 to 300 K. Temperature dependencies of heat capacity were treated within the framework of the Debye and Einstein models and Schottky anomalies. Abnormal additional contribution to the solid solution heat capacity near 7 K was treated assuming the existence of excessive low-frequency oscillatory states associated with the substitutional disorder of yttrium and gadolinium ions over the crystalline lattice sites. Keywords: heat capacity, alumoborates, Debye and Einstein contributions, Schottky anomaly, substitutional disorder.
- A. Molchanova, K. Boldyrev, N. Kuzmin, A. Veligzhanin, K. Khaydukov, E. Khaydukov, O. Kondratev, I. Gudim, E. Mikliaeva, M. Popova. Materials 16, 537 (2023)
- S.N. Ivanov, G.V. Egorov. FTT 33, 626 (1991) (in Russian)
- A.A. Prokhorov, L.F. Chernush, R. Minikayev, A. Mazur, T. Zajarniuk, A. Szewczyk, V. Dyakonov, J. Lanvcok, A.D. Prokhorov. J. Alloy Compd. 765, 710 (2018)
- V.M. Denisov, L.T. Denisova, I.A. Gudim, V.A. Temerov, G.S. Patrin, N.V. Volkov, L.G. Chumina. DAN 453, 628 (2013) (in Russian)
- A.D. Mills. Inorg. Chem. 1, 960 (1962)
- M.U. Gutowska, J. Wieckowski, A. Szewczyk, S. Kolesnik, B. Dabrowski, M. Kowalczyk, J. Pietosa, N. Nedelko, R. Minikayev. J. Alloy Compd. 670, 175 (2016)
- E.V. Shevchenko, E.V. Charnaya, E.N. Khazanov, A.V. Taranov, A.S. Bugaev. J. Alloy Compd. 717, 183 (2017)
- W.N. Lawless. Phys. Rev. B 14, 134 (1976)
- A. Tari. The Specific Heat of Matter at Low Temperatures. Imperial College Press, London (2003). 339 p
- E.A. Dobretsova, E.Yu Borovikova, K.N. Boldyrev, V.S. Kurazhkovskaya, N.I. Leonyuk. Optika i spektroskopiya 116, 85 (2014) (in Russian)
- A. Abragam, B. Blini. Elektronnyj paramagnitnyj rezonans perekhodnykh ionov. V. 1, Mir, Moscow (1972). p. 652 (in Russian)
- A.D. Prokhorov, I.N. Krygin, A.A. Prokhorov, L.F. Chernush, P. Aleshkevich, V. Dyakonov, H. Szymczak. Phys. Status Solidi A 206, 2617, (2009)
- A. Kushino, Y. Aoki, N.Y. Yamasaki, T. Namiki, Y. Ishisaki, T.D. Matsuda, T. Ohashi, K. Mitsuda, T. Yazawa. J. Appl. Phys. 90, 5812 (2001)
- E.V. Shevchenko, E.V. Charnaya, E.N. Khazanov, A.V. Taranov, A.S. Bugaev. J. Alloy Compd. 717, 183 (2017)
- S.A. Nikitov, A.V. Taranov, E.N. Khazanov, E.V. Charnaya, M.V. Likholetova, E.V. Shevchenko. Akustichesky zhurnal 70, 180 (2024) (in Russian)
- Low-temperature thermal and vibrational properties of disordered solids. Ed. M.A. Ramos. World Scientific Publishing, Singapore (2022). 504 p
Подсчитывается количество просмотров абстрактов ("html" на диаграммах) и полных версий статей ("pdf"). Просмотры с одинаковых IP-адресов засчитываются, если происходят с интервалом не менее 2-х часов.
Дата начала обработки статистических данных - 27 января 2016 г.