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Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/6524

Title: Effect of Cr substitution on transport and magnetic ordering in Nd0.50Sr0.50Mn1-xCrxO3 (0.001 <= x <= 0.20)
Authors: SRIVASTAVA, CM
DWIVEDI, RK
ASTHANA, S
NIGAM, AK
BAHADUR, D
Keywords: colossal magnetoresistance
metamagnetic transition
verwey transition
phase-transition
double exchange
nd0.5sr0.5mno3
field
coexistence
manganites
gap
Issue Date: 2004
Publisher: ELSEVIER SCIENCE BV
Citation: JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 284(), 239-252
Abstract: Chromium substitution in the charge ordered compound Nd0.50Sr0.50MnO3 has been studied within the concentration range of 20% to examine its effect on magnetic and transport properties. It is found that the system comprises of three distinct magnetic phases whose percentage depends on the chromium concentration, the temperature and the external magnetic field. As the system is cooled, it changes from paramagnetic insulating type to a predominantly ferromagnetic metal (FM) and finally to a dominating anti-ferromagnetic insulating phase with A, CE or C-type of order depending on the chromium concentration. The appearance of three symmetrical loops in the hysteresis curve of M vs. H at 5 K for x = 0.01 indicates the simultaneous presence of C, A and FM type phases in the system. (C) 2004
URI: http://dx.doi.org/10.1016/j.jmmm.2004.06.042
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6524
http://hdl.handle.net/10054/6524
ISSN: 0304-8853
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