Theoretical description of the magnetocaloric effect in Pr0.67Sr0.33MnO3 manganite using the mean-field theory

被引：3

作者：

Mabrouki, W. ^{[1
]}

Krichene, A. ^{[1
]}

Boudjada, N. Chniba ^{[1
,2
]}

Boujelben, W. ^{[1
]}

机构：

[1] Univ Sfax, Fac Sci Sfax, Lab Phys Materiaux, BP 1171, Sfax 3000, Tunisia

[2] Inst Neel, BP 166, F-38042 Grenoble 9, France

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2023年 / 129卷 / 12期

关键词：

Mean-field theory; Manganite; Magnetocaloric effect; Magnetic refrigeration; PR(0.63)A(0.07)SR(0.3)MNO(3) A=PR; SINTERING TEMPERATURE; MAGNETIC-PROPERTIES; CRITICAL-BEHAVIOR; SM;

D O I：

10.1007/s00339-023-07133-8

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper presents a theoretical description of the magnetocaloric effect in Pr0.67Sr0.33MnO3 manganite. The mean-field theory has been used around the Curie temperature to simulate the temperature dependence of the magnetic entropy change under several applied magnetic fields. The obtained results were compared with experimental data computed from the Maxwell relation. The excellent agreement between the two methods confirms the validity of the mean-field theory for modeling the magnetocaloric properties of the Pr0.67Sr0.33MnO3 manganite. The validity of this theory suggests the presence of negligible critical fluctuations near the Curie temperature T-C. The magnetocaloric study indicates that our sample can be used as a magnetic refrigerant near room temperature.

引用

页数：6

共 23 条

[1] A mean-field scaling method for first- and second-order phase transition ferromagnets and its application in magnetocaloric studies [J].

Amaral, J. S. ;

Silva, N. J. O. ;

Amaral, V. S. .

APPLIED PHYSICS LETTERS, 2007, 91 (17)

[2] Magnetoelastic coupling influence on the magnetocaloric effect in ferromagnetic materials [J].

Amaral, VS ;

Amaral, JS .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2004, 272 :2104-2105

[3] Impact of sintering temperature on room temperature magneto-resistive and magneto-caloric properties of Pr2/3Sr1/3MnO3 [J].

Bhatt, Ramesh Chandra ;

Singh, Shiva Kumar ;

Srivastava, P. C. ;

Agarwal, S. K. ;

Awana, V. P. S. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 580 :377-381

[4] Structural, magnetic and magnetocaloric properties of nanostructured Pr0.5Sr0.5MnO3 manganite synthesized by mechanical alloying [J].

Bourouina, M. ;

Krichene, A. ;

Boudjada, N. Chniba ;

Khitouni, M. ;

Boujelben, W. .

CERAMICS INTERNATIONAL, 2017, 43 (11) :8139-8145

[5] Developments in magnetocaloric refrigeration [J].

Brück, E .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2005, 38 (23) :R381-R391

[6] Mean-field cluster model for the critical behaviour of ferromagnets [J].

Chamberlin, RV .

NATURE, 2000, 408 (6810) :337-339

[7] Colossal magnetoresistant materials: The key role of phase separation [J].

Dagotto, E ;

Hotta, T ;

Moreo, A .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2001, 344 (1-3) :1-153

[8] Suppression of Metamagnetic Transitions of Martensitic Type by Particle Size Reduction in Charge-Ordered La0.5Ca0.5MnO3 [J].

Dhieb, S. ;

Krichene, A. ;

Boudjada, N. Chniba ;

Boujelben, W. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2020, 124 (32) :17762-17771

[9] Landau theory and critical behavior near the ferromagnetic-paramagnetic transition temperature in Pr0.63A0.07Sr0.3MnO3 (A=Pr, Sm and Bi) manganites [J].

Elghoul, A. ;

Krichene, A. ;

Boujelben, W. .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2017, 108 :52-60

[10] Electrical, magnetic and magnetocaloric properties of polycrystalline Pr0.63A0.07Sr0.3MnO3 (A=Pr, Sm and Bi) [J].

Elghoul, A. ;

Krichene, A. ;

Boujelben, W. .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2016, 98 :263-270

← 1 2 3 →