Magnetocaloric effect in polycrystalline Gd1-xCaxBaCo2O5.5

被引：61

作者：

Hamad, Mahmoud Aly ^{[1
]}

机构：

[1] Al Jouf Univ, Coll Sci, Dept Phys, Al Jouf, Skaka, Saudi Arabia

来源：

MATERIALS LETTERS | 2012年 / 82卷

关键词：

Magnetic materials; Simulation and modeling; PEROVSKITES; TRANSITION;

D O I：

10.1016/j.matlet.2012.05.088

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Calculations of the magnetocaloric effect had been carried out. Dependence of the magnetization on temperature variation for Gd1 - xCaxBaCo2O5.5 upon 100 Oe magnetic fields was simulated. The behavior of the temperature-dependent magnetocaloric effect, in the vicinity of magnetic phase transitions, was investigated. The values of maximum magnetic entropy change, full-width at half-maximum, and relative cooling power at different concentrations of Ca. in 100 Oe magnetic field variation, were calculated. It was shown that an increase in Ca concentration leads to improve magnetocaloric effect polycrystalline Gd1 - xCaxBaCo2O5.5. A polycrystalline Gd1 - xCaxBaCo2O5.5 provides an efficient mean to realize solid-state cooling devices for a broad range of applications. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：181 / 183

页数：3

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