Research output: Contribution to journal › Article › peer-review
Features of the Low-Temperature Heat Capacity of Er3-xTmxAl5O12 Garnet Single Crystals. / Charnaya, E. V. ; Shevchenko, E. V. ; Khazanov, E. N. ; Taranov, A. V. ; Ulyashev, A. M. .
In: Journal of Communications Technology and Electronics, Vol. 64, No. 8, 2019, p. 811-817.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Features of the Low-Temperature Heat Capacity of Er3-xTmxAl5O12 Garnet Single Crystals
AU - Charnaya, E. V.
AU - Shevchenko, E. V.
AU - Khazanov, E. N.
AU - Taranov, A. V.
AU - Ulyashev, A. M.
N1 - Charnaya, E.V., Shevchenko, E.V., Khazanov, E.N. et al. Features of the Low-Temperature Heat Capacity of Er3 –xTmxAl5O12 Garnet Single Crystals. J. Commun. Technol. Electron. 64, 811–817 (2019). https://doi.org/10.1134/S1064226919070064
PY - 2019
Y1 - 2019
N2 - Abstract: In this paper, we present the results of studies of the heat capacity of single-crystal garnets Er 3 ‒ xTm xAl 5O 12 (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 Er 3+ and Tm 3+ 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.
AB - Abstract: In this paper, we present the results of studies of the heat capacity of single-crystal garnets Er 3 ‒ xTm xAl 5O 12 (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 Er 3+ and Tm 3+ 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.
KW - YTTRIUM-ALUMINUM-GARNET
KW - ENERGY-LEVELS
KW - MAGNETIC-SUSCEPTIBILITY
KW - TRANSITION
UR - http://www.scopus.com/inward/record.url?scp=85070856446&partnerID=8YFLogxK
U2 - 10.1134/S1064226919070064
DO - 10.1134/S1064226919070064
M3 - Article
VL - 64
SP - 811
EP - 817
JO - Journal of Communications Technology and Electronics
JF - Journal of Communications Technology and Electronics
SN - 1064-2269
IS - 8
ER -
ID: 46220852