Temperature dependence of electroresistance for La0.67Ba0.33MnO3 manganite

Autor:	Rajesh Kumar, Vijay Kumar, G.L. Bhalla, Ajai K. Gupta, Neeraj Khare
Rok vydání:	2007
Předmět:	Materials science Stiffness coefficient Condensed matter physics Spins Electrical resistivity and conductivity Transition temperature General Materials Science Biasing General Chemistry Metal–insulator transition Condensed Matter Physics Manganite
Zdroj:	Journal of Physics and Chemistry of Solids. 68:2394-2397
ISSN:	0022-3697
DOI:	10.1016/j.jpcs.2007.07.081
Popis:	The influence of dc biasing current on temperature dependence of resistance of La 0.67 Ba 0.33 MnO 3 bulk sample is reported. A decrease in the resistance (electroresistance) on the application of higher bias current is observed. The electroresistance is maximum at metal–insulator transition temperature ( T MI ) and decreases when the temperature is either increased or decreased from T MI . A two-phase model is proposed to explain the occurrence of electroresistance. The higher bias current leads to an increase in alignment of spins and thus, in turn, leads to an increase in spin stiffness coefficient and decrease in the resistance at T MI .
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::ba6616c93cdd0876fc397f2c560be7bb https://doi.org/10.1016/j.jpcs.2007.07.081 Zobrazit plný text záznamu Full Text from ScienceDirect