ТЕПЛОЁМКОСТЬ И МАГНИТОКАЛОРИЧЕСКИЙ ЭФФЕКТ В МАНГАНИТАХ La0.7SrxBa0.3-xMnO3

A. B. Gadzhiev; A. G. Gamzatov; A. B. Batdalov; A. M. Aliev; D. Nanto; B. Kurniawan; S. C. Yu; D. H. Kim

doi:10.47475/2500-0101-2021-16107

ТЕПЛОЁМКОСТЬ И МАГНИТОКАЛОРИЧЕСКИЙ ЭФФЕКТ В МАНГАНИТАХ La_0.7Sr_xBa_0.3-xMnO₃

Translated title of the contribution: Heat capacity and magnetocaloric effect in manganites La_0.7Sr_0.3-xBa_xMnO₃

A. B. Gadzhiev, A. G. Gamzatov, A. B. Batdalov, A. M. Aliev, D. Nanto, B. Kurniawan, S. C. Yu, D. H. Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Results of an experimental study of the heat capacity (C_p), as well as direct and indirect measurements of the MCE (∆T, ∆S) of La_0.7Sr_0.3-xBa_xMnO₃ samples (x = 0, 0.02, 0.05, 0.10) in the temperature range 80–400 K and in magnetic fields up to 1.8 T are presented. It is shown that the partial substitution of barium (Ba) for strontium (Sr) shifts T_C and insignificantly decreases the magnetocaloric effect. The maximum value of the change in entropy in a field of 1.8 T is ∆S = 1.6 J/kg·K for x = 0.02. The entropy change associated with the disordering of the magnetic system during the ferromagnetic-paramagnetic phase transition is estimated.

Translated title of the contribution	Heat capacity and magnetocaloric effect in manganites La_0.7Sr_0.3-xBa_xMnO₃
Original language	Russian
Pages (from-to)	87-94
Number of pages	8
Journal	Chelyabinsk Physical and Mathematical Journal
Volume	6
Issue number	1
DOIs	https://doi.org/10.47475/2500-0101-2021-16107
Publication status	Published - 2021

Keywords

Heat capacity
Magnetocaloric effect
Manganites
Phase transitions

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@article{da7d87c192e04fd2b0b457370ce7297f,

title = "ТЕПЛОЁМКОСТЬ И МАГНИТОКАЛОРИЧЕСКИЙ ЭФФЕКТ В МАНГАНИТАХ La0.7SrxBa0.3-xMnO3",

abstract = "Results of an experimental study of the heat capacity (Cp), as well as direct and indirect measurements of the MCE (∆T, ∆S) of La0.7Sr0.3-xBaxMnO3 samples (x = 0, 0.02, 0.05, 0.10) in the temperature range 80–400 K and in magnetic fields up to 1.8 T are presented. It is shown that the partial substitution of barium (Ba) for strontium (Sr) shifts TC and insignificantly decreases the magnetocaloric effect. The maximum value of the change in entropy in a field of 1.8 T is ∆S = 1.6 J/kg·K for x = 0.02. The entropy change associated with the disordering of the magnetic system during the ferromagnetic-paramagnetic phase transition is estimated.",

keywords = "Heat capacity, Magnetocaloric effect, Manganites, Phase transitions",

author = "Gadzhiev, {A. B.} and Gamzatov, {A. G.} and Batdalov, {A. B.} and Aliev, {A. M.} and D. Nanto and B. Kurniawan and Yu, {S. C.} and Kim, {D. H.}",

note = "Funding Information: The study is supported by a grant of the Russian Science Foundation, project 18-12-00415. Publisher Copyright: {\textcopyright} 2021 Pirogov Russian National Research Medical University. All rights reserved.",

year = "2021",

doi = "10.47475/2500-0101-2021-16107",

language = "Russian",

volume = "6",

pages = "87--94",

journal = "Chelyabinsk Physical and Mathematical Journal",

issn = "2500-0101",

publisher = "Chelyabinsk State University",

number = "1",

}

TY - JOUR

T1 - ТЕПЛОЁМКОСТЬ И МАГНИТОКАЛОРИЧЕСКИЙ ЭФФЕКТ В МАНГАНИТАХ La0.7SrxBa0.3-xMnO3

AU - Gadzhiev, A. B.

AU - Gamzatov, A. G.

AU - Batdalov, A. B.

AU - Aliev, A. M.

AU - Nanto, D.

AU - Kurniawan, B.

AU - Yu, S. C.

AU - Kim, D. H.

N1 - Funding Information: The study is supported by a grant of the Russian Science Foundation, project 18-12-00415. Publisher Copyright: © 2021 Pirogov Russian National Research Medical University. All rights reserved.

PY - 2021

Y1 - 2021

N2 - Results of an experimental study of the heat capacity (Cp), as well as direct and indirect measurements of the MCE (∆T, ∆S) of La0.7Sr0.3-xBaxMnO3 samples (x = 0, 0.02, 0.05, 0.10) in the temperature range 80–400 K and in magnetic fields up to 1.8 T are presented. It is shown that the partial substitution of barium (Ba) for strontium (Sr) shifts TC and insignificantly decreases the magnetocaloric effect. The maximum value of the change in entropy in a field of 1.8 T is ∆S = 1.6 J/kg·K for x = 0.02. The entropy change associated with the disordering of the magnetic system during the ferromagnetic-paramagnetic phase transition is estimated.

AB - Results of an experimental study of the heat capacity (Cp), as well as direct and indirect measurements of the MCE (∆T, ∆S) of La0.7Sr0.3-xBaxMnO3 samples (x = 0, 0.02, 0.05, 0.10) in the temperature range 80–400 K and in magnetic fields up to 1.8 T are presented. It is shown that the partial substitution of barium (Ba) for strontium (Sr) shifts TC and insignificantly decreases the magnetocaloric effect. The maximum value of the change in entropy in a field of 1.8 T is ∆S = 1.6 J/kg·K for x = 0.02. The entropy change associated with the disordering of the magnetic system during the ferromagnetic-paramagnetic phase transition is estimated.

KW - Heat capacity

KW - Magnetocaloric effect

KW - Manganites

KW - Phase transitions

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U2 - 10.47475/2500-0101-2021-16107

DO - 10.47475/2500-0101-2021-16107

M3 - Article

AN - SCOPUS:85112343642

SN - 2500-0101

VL - 6

SP - 87

EP - 94

JO - Chelyabinsk Physical and Mathematical Journal

JF - Chelyabinsk Physical and Mathematical Journal

IS - 1

ER -

ТЕПЛОЁМКОСТЬ И МАГНИТОКАЛОРИЧЕСКИЙ ЭФФЕКТ В МАНГАНИТАХ La_0.7Sr_xBa_0.3-xMnO₃

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