Structural, magnetic and magnetocaloric properties of layered perovskite La1.1Bi0.3Sr1.6Mn2O7

被引：18

作者：

Oubla, M. ^{[1
]}

Lamire, M. ^{[1
]}

Boutahar, A. ^{[2
]}

Lassri, H. ^{[2
]}

Manoun, B. ^{[3
]}

Hlil, E. K. ^{[4
,5
]}

机构：

[1] Univ Hassan II Casablanca, Fac Sci Ain Chock, Lab Phys Chim Mat Inorgan, Maarif, Morocco

[2] Univ Hassan II Casablanca, Fac Sci Ain Chock, Lab Phys Mat Microelect Automat & Therm, Maarif, Morocco

[3] Univ Hassan 1er, LS3M, Khouribga 25000, Morocco

[4] CNRS, Inst Neel, F-38042 Grenoble 9, France

[5] Univ Grenoble 1, F-38042 Grenoble 9, France

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2016年 / 403卷

关键词：

Perovskite; Rietveld refinement; Magnetic measurements; Magnetocaloric effect; COLOSSAL MAGNETORESISTANCE; GIANT MAGNETORESISTANCE; TRANSITION; BEHAVIOR; CRYSTAL;

D O I：

10.1016/j.jmmm.2015.11.076

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The La1.1Bi0.3Sr1.6Mn2O7 sample was synthesized by coprecipitation method. Its structure has been characterized by X-ray powder diffraction. The diffraction patterns are consistent with the 14/mmm symmetry, with tetragonal lattice parameters a=3.8750 perpendicular to 0.0001 angstrom and c= 20.0456 perpendicular to 0.0002 angstrom. Magnetic measurements have shown a ferromagnetic like ordering with second order magnetic phase transition to paramagnetic states. The magnetic entropy change caused by a magnetic field, (-Delta S-max), was estimated on the basis of the Maxwell relation. The maximum magnetic entropy change (-Delta S-max) and the relative cooling power (RCP) are, 1.651 kg(-1)K(-1) and 134.41 kg(-1) respectively, for a 5 T magnetic field change at 340 K. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：114 / 117

页数：4

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