Study of the magnetic and magnetocaloric properties of new perovskite-type materials: La0.6Ba0.2Sr0.2Mn1-xFexO3

被引：9

作者：

Chihi, I. ^{[1
]}

Baazaoui, M. ^{[1
]}

Mahjoub, S. ^{[1
]}

Cheikhrouhou-Koubaa, W. ^{[2
]}

Oumezzine, M. ^{[1
]}

Farah, Kh. ^{[3
,4
]}

机构：

[1] Univ Monastir, Fac Sci Monastir, Dept Phys, Lab Physicochim Mat, Monastir, Tunisia

[2] Technopole Sfax, Ctr Rech Numer Sfax, LT2S, Sfax, Tunisia

[3] Ctr Natl Sci & Technol Nucl, Lab Rech Energie & Matiere, Dev Sci Nucl LR16CNSTN02, Sidi Thabet 2020, Tunisia

[4] Univ Sousse, Inst Super Transport & Logist, PB 247, Sousse 4023, Tunisia

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2019年 / 125卷 / 09期

关键词：

SUBSTITUTION; FE; DISORDER; BEHAVIOR;

D O I：

10.1007/s00339-019-2909-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, we investigated the effect of iron doping on the structural, magnetic and magnetocaloric properties of -La0.6Ba0.2Sr0.2Mn1-xFexO3 (0 < x < 0.06) samples. All the samples crystallized in a rhombohedral system with R3c space group. Magnetic measurements showed that our samples undergo a FM-PM transition around the Curie temperature (Tc) which is equal to 349 K, 289 K, and 249 K for x = 0, 0.03, and 0.06, respectively. This decrease in Tc with the increase in Fe content can be related to the weakness of the -Mn3+-O-Mn4+ double exchange interaction. The magnetocaloric effect was estimated by the calculation of the magnetic entropy change (-.S max M) as a function of temperature at different applied magnetic fields. The maximum values of the magnetic entropy change are found to be 2.43 J kg-1 K-1, 2.16 J kg-1 K-1, and 1.65 J kg-1 K-1 under a magnetic field of 5 T for x = 0, 0.03, and 0.06, respectively.

引用

页数：7

共 38 条

[1] Structural, magnetic and magnetocaloric properties of La0.5Sm0.2Sr0.3Mn1-xFexO3 compounds with (0 ≤ x ≤ 0.15) [J].

Abdouli, Kh ;

Cherif, W. ;

Omrani, H. ;

Mansouri, M. ;

Valent, M. A. ;

Graca, M. P. F. ;

Ktari, L. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2019, 475 :635-642

[2] Effects of Fe doping in the colossal magnetoresistive La1-xCaxMnO3 [J].

Ahn, KH ;

Wu, XW ;

Liu, K ;

Chien, CL .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5505-5507

[3] Magnetocaloric properties in Ln0.67Ba0.33Mn1-xFexO3 (Ln = La or Pr) manganites [J].

Baazaoui, M. ;

Boudard, M. ;

Zemni, S. .

MATERIALS LETTERS, 2011, 65 (14) :2093-2095

[4] Magnetic and electrical behaviour of La0.67Ba0.33Mn1-xFexO3 perovskites [J].

Baazaoui, M. ;

Zemni, S. ;

Boudard, M. ;

Rahmouni, H. ;

Gasmi, A. ;

Selmi, A. ;

Oumezzine, M. .

MATERIALS LETTERS, 2009, 63 (24-25) :2167-2170

[5] ON A GENERALISED APPROACH TO 1ST AND 2ND ORDER MAGNETIC TRANSITIONS [J].

BANERJEE, SK .

PHYSICS LETTERS, 1964, 12 (01) :16-17

[6] Effect of A-site ionic disorder on magnetocaloric properties in large band width manganite systems [J].

Banik, Sanjib ;

Das, I. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 742 :248-255

[7] Effect of Fe substitution on magnetocaloric effect in La0.7Sr0.3Mn1-xFexO3 (0.05≤x≤0.20) [J].

Barik, S. K. ;

Krishnamoorthi, C. ;

Mahendiran, R. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2011, 323 (07) :1015-1021

[8] Preparation and magnetocaloric effect of self-doped La0.8-xNa0.2□xMnO3+δ (□ = vacancies) polycrystal [J].

Chen, W ;

Zhong, W ;

Hou, DL ;

Gao, RW ;

Feng, WC ;

Zhu, MG ;

Du, YW .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2002, 14 (45) :11889-11896

[9] Mixed-valence manganites [J].

Coey, JMD ;

Viret, M ;

von Molnár, S .

ADVANCES IN PHYSICS, 1999, 48 (02) :167-293

[10]

Cullity B. D., 1972, Introduction to Magnetic Materials

← 1 2 3 4 →