Record Details


Field	Value

Title	Elastic behavior of La0.67Ca0.33MnO3 : ZrO2 composites

Creator	LALITHA, G DAS, D BAHADUR, D REDDY, PV

Subject	magnetoresistance composite materials oxide materials sol-gel processes mechanical properties ultrasonics

Description	A series of Colossal Magneto Resistance materials, with compositional formula (1 - x) La0.67Ca0.33MnO3 + xZrO(2) (where x=0%, 10%, 20%. 40%, 60%, 80%) were prepared by sol-gel technique. When characterized structurally by X-ray diffraction they are found to have Cubic Structure. After measuring, their bulk densities, the ultra shear longitudinal (V-1) and shear velocities (V-s) were measured at room temperature using the Pulse transmission technique. Using the ultrasonic data, the values of Young's and rigidity moduli along with Poisson's ratio and Debye temperatures have been calculated. As the materials are porous, zero porous elastic moduli have also been arrived at using a well-known model. The observed variation of clastic moduli with varying ZrO2 concentration has been explained qualitatively. (C) 2007

Publisher	ELSEVIER SCIENCE SA

Date	2011-07-27T20:46:31Z 2011-12-26T12:58:22Z 2011-12-27T05:48:06Z 2011-07-27T20:46:31Z 2011-12-26T12:58:22Z 2011-12-27T05:48:06Z 2008

Type	Article

Identifier	JOURNAL OF ALLOYS AND COMPOUNDS, 464(1-2), 6-8 0925-8388 http://dx.doi.org/10.1016/j.jallcom.2007.09.097 http://dspace.library.iitb.ac.in/xmlui/handle/10054/7324 http://hdl.handle.net/10054/7324

Language	en

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