Study of magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 perovskite-type manganese oxides

R. Cherif; E. K. Hlil; M. Ellouze; F. Elhalouani; S. Obbade

首页> 外文期刊>Journal of Materials Science >Study of magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 perovskite-type manganese oxides

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Study of magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 perovskite-type manganese oxides

机译：La_（0.6）Pr_（0.1）Ba_（0.3）MnO_3和La_（0.6）Pr_（0.1）Ba_（0.3）Mn_（0.9）Fe_（0.1）O_3钙钛矿型锰氧化物的磁和磁热性质的研究

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The compositional dependence of the magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 (LPBMO) and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 (LPBMFO) were investigated. Polycrystalline samples were prepared by the standard solid-state reaction method. Temperaturedependent magnetization measurements and Arrott analysis reveal second-order ferromagnetic transitions in both samples with Curie temperature increasing with doping iron from 94 K for LPBMO to 277 K for LPBMFO. Magnetic entropy change |△SM| was calculated by applying the thermodynamic Maxwell equation to a series of isothermal field-dependent magnetization curves. However, the analysis of the magnetocaloric effect (MCE) using Landau theory of phase transition shows that the contributions to the free energy from the presence of ferromagnetic clusters are strongly influencing the MCE by coupling with the order parameter around the Curie temperature.

机译：La_（0.6）Pr_（0.1）Ba_（0.3）MnO_3（LPBMO）和La_（0.6）Pr_（0.1）Ba_（0.3）Mn_（0.9）Fe_（0.1）O_3（LPBMFO）的磁和磁热性质的成分依赖性）进行了调查。通过标准的固态反应方法制备多晶样品。随温度变化的磁化测量和Arrott分析显示，两个样品中的二阶铁磁跃迁都随着掺杂铁的居里温度从LPBMO的94 K增加到LPBMFO的277 K而增加。磁熵变|△SM |通过将热力学麦克斯韦方程应用于一系列等温场相关的磁化曲线来计算。然而，使用Landau相变理论对磁热效应（MCE）的分析表明，通过与居里温度附近的有序参数耦合，铁磁簇的存在对自由能的贡献极大地影响了MCE。

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《Journal of Materials Science》 |2014年第24期|共8页
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R. Cherif; E. K. Hlil; M. Ellouze; F. Elhalouani; S. Obbade;
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Study; type; manganese;

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1. Study of magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 perovskite-type manganese oxides [J] . R. Cherif, E. K. Hlil, M. Ellouze, Journal of Materials Science . 2014,第24期

机译：La_（0.6）Pr_（0.1）Ba_（0.3）MnO_3和La_（0.6）Pr_（0.1）Ba_（0.3）Mn_（0.9）Fe_（0.1）O_3钙钛矿型锰氧化物的磁和磁热性质的研究
2. Co-infiltrating Pr_(0.6)Sr_(0.4)FeO_3-Ce_(1-x)Pr_xO_2(x=0.1, 0.3, 0.5, 0.7, 0.9) mixed oxides into the La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_3 skeleton for use as low temperature solid oxide fuel cell cathodes [J] . Da Han, Yadi Liu, Shaorong Wang, Electrochimica Acta . 2014,第Null期

机译：将共氧化物Pr_（0.6）Sr_（0.4）FeO_3-Ce_（1-x）Pr_xO_2（x = 0.1、0.3、0.5、0.7、0.9）混合氧化物共渗入La_（0.9）Sr_（0.1）Ga_（0.8）Mg_ （0.2）O_3骨架，用作低温固体氧化物燃料电池阴极
3. Co-infiltrating Pr_(0.6)Sr_(0.4)FeO_3-Ce_(1-x)Pr_xO_2(x=0.1, 0.3, 0.5, 0.7, 0.9) mixed oxides into the La_(0.9)Sr_(0.1)Ga_(0.8)Mg_(0.2)O_3 skeleton for use as low temperature solid oxide fuel cell cathodes [J] . Da Han, Yadi Liu, Shaorong Wang, Electrochimica Acta . 2014,第Null期

机译：将共氧化物Pr_（0.6）Sr_（0.4）FeO_3-Ce_（1-x）Pr_xO_2（x = 0.1、0.3、0.5、0.7、0.9）混合氧化物共渗入La_（0.9）Sr_（0.1）Ga_（0.8）Mg_ （0.2）O_3骨架，用作低温固体氧化物燃料电池阴极
4. Composite Anode of Ce_(0.6)Mn_(0.3)Fe_(0.1)O_2 and La_(0.6)Sr_(0.4)Fe_(0.9)Mn_(0.1)O_3 For Oxidation Tolerant SOFC [C] . T. Ishihara, T. H. Shin, P. Vanalabhpatana International Symposium on Solid Oxide Fuel Cells . 2009

机译：CE_（0.6）MN_（0.3）FE_（0.1）O_2和LA_（0.6）SR_（0.4）FE_（0.9）MN_（0.1）O_3的CE_（0.3）FE_（0.1）FE_（0.1）O_3进行氧化耐受性SOFC
5. Evolution of the intrinsic electronic phase separation in La0.6Er0.1Sr0.3MnO3 perovskite [O] . Lili Chen, Jiyu Fan, Wei Tong, -1

机译：La0.6Er0.1Sr0.3MnO3钙钛矿中本征电子相分离的演化
6. Magnon-polaron and Spin-polaron Signatures in the Specific Heat and Electrical Resistivity of $La_{0.6}Y_{0.1}Ca_{0.3}MnO_3$ in Zero Magnetic Field, and the Effect of $Mn-O-Mn$ Bond Environment [O] . Ausloos, M., Hubert, L., Dorbolo, S., 2002

机译：特定热量和热量中的磁极化子和自旋极化子特征零磁性中$ La_ {0.6} Y_ {0.1} Ca_ {0.3} mnO_3 $的电阻率场，以及$ mn-O-mn $债券环境的影响

Study of magnetic and magnetocaloric properties of La_(0.6)Pr_(0.1)Ba_(0.3)MnO_3 and La_(0.6)Pr_(0.1)Ba_(0.3)Mn_(0.9)Fe_(0.1)O_3 perovskite-type manganese oxides

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