Electrical conduction and thermal properties of Bi-doped Pr0.7Sr0.3MnO3 manganite

被引：12

作者：

Daivajna, Mamatha D. ^{[1
]}

Kumar, Neeraj ^{[2
]}

Gahtori, Bhasker ^{[3
]}

Awana, V. P. S. ^{[3
]}

Kuo, Y. K. ^{[3
]}

Rao, Ashok ^{[4
]}

机构：

[1] Manipal Univ, Manipal Inst Technol, Dept Phys, Manipal 576104, Karnataka, India

[2] Univ Trento, Dept Phys, Trento, Italy

[3] Natl Phys Lab CSIR, Superconduct & Cryogen Div, New Delhi 110012, India

[4] Natl Dong Hwa Univ, Dept Phys, Hualien 974, Taiwan

来源：

BULLETIN OF MATERIALS SCIENCE | 2014年 / 37卷 / 01期

关键词：

Magnetic polaron; variable range conduction; thermal measurement; COLOSSAL MAGNETORESISTANCE; TEMPERATURE; THERMOPOWER; TRANSPORT;

D O I：

10.1007/s12034-014-0624-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrical and thermal properties of Bi-doped Pr0.7Sr0.3MnO3 (PSMO) compounds are reported here. It is observed that Bi-doped PSMO compounds follow variable range conduction mechanism. Specific heat, thermal conductivity and thermo-power measurements show that larger Bi-ion, in place of smaller Pr ion, enhances their transition temperatures (T-MI, T-C, T-CP). Thermo-power measurements further strengthen our conclusion for the presence of magnetic polaron, generated due to hybridization of Bi3+-6s(2) and O2--2p orbital and polaronic conduction mechanism.

引用

页码：47 / 51

页数：5