Please use this identifier to cite or link to this item: http://repository.vnu.edu.vn/handle/VNU_123/27830
Title: Size Effect on the Structural and Magnetic Properties of Nanosized Perovskite LaFeO3 Prepared by Different Methods
Authors: Nguyen, Thi Thuy
Dang, Le Minh
Keywords: PARTIAL OXIDATION;MAGNETORESISTANCE;NANOPARTICLES;FERROMAGNETS;PERMEABILITY;TEMPERATURE;COERCIVITY;TRANSPORT;METHANE;OXIDES
Issue Date: 2012
Publisher: HINDAWI PUBLISHING CORPORATION, 410 PARK AVENUE, 15TH FLOOR, #287 PMB, NEW YORK, NY 10022 USA
Citation: ISIKNOWLEDGE
Abstract: Nanosized LaFeO3 material was prepared by 3 methods: high energy milling, citrate gel, and coprecipitation. The X-ray diffraction (XRD), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA) show that the orthorhombic LaFeO3 phase was well formed at a low sintering temperature of 500 degrees C in the citrate-gel and co-precipitation methods. Scanning electron microscope (SEM) and transmission electron microscope (TEM) observations indicate that the particle size of the LaFeO3 powder varies from 10nm to 50nm depending on the preparation method. The magnetic properties through magnetization versus temperature M(T) and magnetization verses magnetic field M(H) characteristics show that the nano-LaFeO3 exhibits a weak ferromagnetic behavior in the room temperature, and the M(H) curves are well fitted by Langevin functions.
Description: TNS06935 ; ADVANCES IN MATERIALS SCIENCE AND ENGINEERING Article Number: 380306 Published: 2012
URI: http://repository.vnu.edu.vn/handle/VNU_123/27830
1687-6822
Appears in Collections:Bài báo của ĐHQGHN trong Web of Science

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