|
Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2007, Volume 86, Issue 5, Pages 393–396
(Mi jetpl852)
|
|
|
|
This article is cited in 21 scientific papers (total in 21 papers)
CONDENSED MATTER
Dependence of the heat capacity of La$_{1-x}$Ag$_x$MnO$_3$ manganites on the Ag content
A. G. Gamzatova, Sh. B. Abdulvagidova, A. M. Alieva, A. B. Batdalova, O. V. Mel'nikovb, O. Yu. Gorbenkob a Daghestan Institute of Physics after Amirkhanov
b M. V. Lomonosov Moscow State University
Abstract:
The heat capacity of La1−x Ag x MnO3 manganites with x = 0.1, 0.15, and 0.2 is measured in the temperature range 77–350 K. An analogy between the effect of doping and the effect of a magnetic field on the temperature dependence of heat capacity of the La1−x Ag x MnO3 system is revealed. As lanthanum is replaced by silver, the volume fraction of the ferromagnetic phase increases, while, in the paramagnetic state, the Jahn-Teller distortions are eliminated. The results of the aforementioned measurements suggest that the phase transition near the Curie point is caused by the competition between the Coulomb and exchange electrostatic interactions. The comparison of the concentration dependences of T C for La1−x Sr x MnO3 and La1−x Ag x MnO3 points to good potentialities of the latter system from the viewpoint of applications.
Received: 16.07.2007
Citation:
A. G. Gamzatov, Sh. B. Abdulvagidov, A. M. Aliev, A. B. Batdalov, O. V. Mel'nikov, O. Yu. Gorbenko, “Dependence of the heat capacity of La$_{1-x}$Ag$_x$MnO$_3$ manganites on the Ag content”, Pis'ma v Zh. Èksper. Teoret. Fiz., 86:5 (2007), 393–396; JETP Letters, 86:5 (2007), 340–343
Linking options:
https://www.mathnet.ru/eng/jetpl852 https://www.mathnet.ru/eng/jetpl/v86/i5/p393
|
Statistics & downloads: |
Abstract page: | 331 | Full-text PDF : | 86 | References: | 41 |
|