Magnetic and optical properties of multiferroic GdMnO₃ nanoparticles

Authors

X. L. Wang, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China
D. Li, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China
T. Y. Cui, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China
Parashu Kharel, University of Nebraska - LincolnFollow
W. Liu, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China
Z. D. Zhang, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, People’s Republic of China

Date of this Version

2010

Comments

Published in J. Appl. Phys. 107, 09B510 (2010). Copyright © 2010 American Institute of Physics. Used by permission.

Abstract

The magnetic and optical properties of multiferroic GdMnO₃ nanoparticles synthesized by a polymerized complex method have been investigated. The GdMnO₃ nanoparticles crystallized in orthorhombic perovskite-type structure. The zero-field-cooled and field-cooled magnetizations show that complicated magnetic transitions occur in a temperature range from 2 to 60 K, which were confirmed by magnetic hysteresis loops. Three shoulder absorption peaks centered at about 2.0, 2.3, and 2.7 eV are attributed to the Mn (3d)-electronic transitions, while an absorption peak at around 4.1 eV corresponds to the charge-transfer transitions between O (2p) and Mn (3d) states. UV emission at about 396 and 406 nm and blue emission at around 466 nm have been found, which may be attributed to the spin-allowed charge-transfer transitions.