DSpace at IIT Bombay >
IITB Publications >
Please use this identifier to cite or link to this item:
|Title: ||Influence of grain size and grain boundaries on the properties of La0.7Sr0.3CoxMn1-xO3|
|Authors: ||DAS, S|
|Keywords: ||giant magnetoresistance|
|Issue Date: ||2002|
|Publisher: ||PERGAMON-ELSEVIER SCIENCE LTD|
|Citation: ||SOLID STATE COMMUNICATIONS, 121(12), 691-695|
|Abstract: ||We have synthesized La0.7Sr0.3Mn0.9Co0.1O3 granular perovskites using ethylenediaminetetraacetic acid (EDTA) as a complexing, agent. The influence of grain size and grain boundary structure on the physical properties was investigated. Our results show that decreasing grain size leads to lowering of the ferromagnetic transition temperature, broadening of the transition, decrease in magnetization and enhancement of resistivity and magnetoresistance at low temperatures. Also, electron spin resonance linewidth and g-value will decrease. These results are explained by spin dependent scattering at the grain boundaries and weakening of magnetic interaction near the surface of grains, which reduces the internal field in the system. (C) 2002 .|
|Appears in Collections:||Article|
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.