Features of the Low-Temperature Heat Capacity of Er3 –xTmxAl5O12 Garnet Single Crystals


Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

In this paper, we present the results of studies of the heat capacity of single-crystal garnets Er3 ‒ xTmxAl5O12 (x = 0, 1, 2, 3) in magnetic fields of up to 9 T and in the temperature range 1.9–220 K. The temperature dependences of the heat capacity are approximated using the sum of the contributions of Schottky anomalies associated with magnetic Er3+ and Tm3+ ions and the Debye and Einstein lattice contributions. Entropy and magnetic entropy are calculated using the heat capacity data. With an increase in the magnetic field, entropy is shown to decrease. This indicates the possibility of using the studied garnets in the adiabatic demagnetization method.

Авторлар туралы

E. Charnaya

St. Petersburg State University

Хат алмасуға жауапты Автор.
Email: charnaya@mail.ru
Ресей, St. Petersburg, 198504

E. Shevchenko

St. Petersburg State University

Email: khazanov@cplire.ru
Ресей, St. Petersburg, 198504

E. Khazanov

Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: khazanov@cplire.ru
Ресей, Moscow, 125009

A. Taranov

Kotelnikov Institute of Radioengineering and Electronics, Russian Academy of Sciences

Email: khazanov@cplire.ru
Ресей, Moscow, 125009

A. Ulyashev

Sorokin Syktyvkar State University

Email: khazanov@cplire.ru
Ресей, Syktyvkar, 167001

Қосымша файлдар

Қосымша файлдар
Әрекет
1. JATS XML

© Pleiades Publishing, Inc., 2019