Suppression of charge order, disappearance of antiferromagnetism, and emergence of ferromagnetism in Nd0.5Ca0.5MnO3 nanoparticles

Rao, S. S. ; Tripathi, S. ; Pandey, D. ; Bhat, S. V. (2006) Suppression of charge order, disappearance of antiferromagnetism, and emergence of ferromagnetism in Nd0.5Ca0.5MnO3 nanoparticles Physical Review B, 74 (14). ISSN 0163-1829

Full text not available from this repository.

Official URL: http://prb.aps.org/abstract/PRB/v74/i14/e144416

Related URL: http://dx.doi.org/10.1103/PhysRevB.74.144416

Abstract

Nd0.5Ca0.5MnO3 nanoparticles (average diameter~20 and 40 nm) are synthesized by the polymeric precursor sol-gel method and characterized by various physico-chemical techniques. Quite strikingly, in the 20 nm particles, the charge-ordered (CO) and the antiferromagnetic phases observed in the bulk below 250 K and 160 K, respectively, are completely absent. Instead, a ferromagnetic (FM) transition is observed at 95 K followed by an insulator-to-metal transition at 75 K. The 40 nm particles show a residual CO phase but a transition to the FM state also occurs, at a slightly higher temperature of 110 K.

Item Type:Article
Source:Copyright of this article belongs to American Physical Society .
ID Code:2701
Deposited On:08 Oct 2010 09:30
Last Modified:23 May 2011 05:25

Repository Staff Only: item control page