Investigation of the magnetocaloric effect by means of theoretical models in Nd0.67Ba0.33MnO3 manganite

Bandar Alzahrani; Mohamed Hsini; Sobhi Hcini; Abdessalem Dhahri; Mohamed Lamjed Ben Youssef Bouazizi

doi:10.1007/s00339-020-03527-0

Investigation of the magnetocaloric effect by means of theoretical models in Nd_0.67Ba_0.33MnO₃ manganite

Bandar Alzahrani
, Mohamed Hsini
, Sobhi Hcini
, Abdessalem Dhahri
, Mohamed Lamjed Ben Youssef Bouazizi

Mechanical Engineering

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

5 Scopus citations

Abstract

In this paper, we have used the Landau theory to simulate the MCE in the Nd_0.67Ba_0.33MnO₃ manganite. The expanding of the Gibb’s free energy as a function of magnetization to the eighth order has given better results than the developing at sixth order in modeling the magnetic entropy change. The second-order phase magnetic transition of Nd_0.67Ba_0.33MnO₃ sample has been proved. Under low magnetic fields, a phenomenological model has been used to determine some magnetic properties for the sample. Theoretical calculations have been compared to the experimental results.

Original language	English
Article number	344
Journal	Applied Physics A: Materials Science and Processing
Volume	126
Issue number	5
DOIs	https://doi.org/10.1007/s00339-020-03527-0
State	Published - 1 May 2020

Keywords

Landau theory
Magnetization
Magnetocaloric effect
Phenomenological model

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10.1007/s00339-020-03527-0

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title = "Investigation of the magnetocaloric effect by means of theoretical models in Nd0.67Ba0.33MnO3 manganite",

abstract = "In this paper, we have used the Landau theory to simulate the MCE in the Nd0.67Ba0.33MnO3 manganite. The expanding of the Gibb{\textquoteright}s free energy as a function of magnetization to the eighth order has given better results than the developing at sixth order in modeling the magnetic entropy change. The second-order phase magnetic transition of Nd0.67Ba0.33MnO3 sample has been proved. Under low magnetic fields, a phenomenological model has been used to determine some magnetic properties for the sample. Theoretical calculations have been compared to the experimental results.",

keywords = "Landau theory, Magnetization, Magnetocaloric effect, Phenomenological model",

author = "Bandar Alzahrani and Mohamed Hsini and Sobhi Hcini and Abdessalem Dhahri and \{Ben Youssef Bouazizi\}, \{Mohamed Lamjed\}",

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T1 - Investigation of the magnetocaloric effect by means of theoretical models in Nd0.67Ba0.33MnO3 manganite

AU - Alzahrani, Bandar

AU - Hsini, Mohamed

AU - Hcini, Sobhi

AU - Dhahri, Abdessalem

AU - Ben Youssef Bouazizi, Mohamed Lamjed

PY - 2020/5/1

Y1 - 2020/5/1

N2 - In this paper, we have used the Landau theory to simulate the MCE in the Nd0.67Ba0.33MnO3 manganite. The expanding of the Gibb’s free energy as a function of magnetization to the eighth order has given better results than the developing at sixth order in modeling the magnetic entropy change. The second-order phase magnetic transition of Nd0.67Ba0.33MnO3 sample has been proved. Under low magnetic fields, a phenomenological model has been used to determine some magnetic properties for the sample. Theoretical calculations have been compared to the experimental results.

AB - In this paper, we have used the Landau theory to simulate the MCE in the Nd0.67Ba0.33MnO3 manganite. The expanding of the Gibb’s free energy as a function of magnetization to the eighth order has given better results than the developing at sixth order in modeling the magnetic entropy change. The second-order phase magnetic transition of Nd0.67Ba0.33MnO3 sample has been proved. Under low magnetic fields, a phenomenological model has been used to determine some magnetic properties for the sample. Theoretical calculations have been compared to the experimental results.

KW - Landau theory

KW - Magnetization

KW - Magnetocaloric effect

KW - Phenomenological model

UR - https://www.scopus.com/pages/publications/85083364881

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SN - 0947-8396

VL - 126

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 5

M1 - 344

ER -

Investigation of the magnetocaloric effect by means of theoretical models in Nd_0.67Ba_0.33MnO₃ manganite

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