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Effect of Cr substitution on transport and magnetic ordering in Nd0.50Sr0.50Mn1-xCrxO3 (0.001 <= x <= 0.20)

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Title Effect of Cr substitution on transport and magnetic ordering in Nd0.50Sr0.50Mn1-xCrxO3 (0.001
 
Creator SRIVASTAVA, CM
DWIVEDI, RK
ASTHANA, S
NIGAM, AK
BAHADUR, D
 
Subject colossal magnetoresistance
metamagnetic transition
verwey transition
phase-transition
double exchange
nd0.5sr0.5mno3
field
coexistence
manganites
gap
manganites
charge ordering
magnetic
perovskite
 
Description 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
 
Publisher ELSEVIER SCIENCE BV
 
Date 2011-07-24T19:47:18Z
2011-12-26T12:47:59Z
2011-12-27T05:42:45Z
2011-07-24T19:47:18Z
2011-12-26T12:47:59Z
2011-12-27T05:42:45Z
2004
 
Type Article
 
Identifier JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 284(), 239-252
0304-8853
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
 
Language en