Open AccessPREPARATION AND STUDY OF FERRITE GARNET R3Fe5O12 (R=Y, Gd, Dy) NANOPARTICLES
Author(s) -
Nguyet Thi Thuy Dao,
Duy Nguyen,
Hien Duc Than
Publication year - 2012
Publication title -
khoa học công nghệ
Language(s) - English
Resource type - Journals
ISSN - 1859-0128
DOI - 10.32508/stdj.v15i2.1798
Subject(s) - crystallite , materials science , transmission electron microscopy , nanoparticle , particle size , lattice constant , ceramic , scherrer equation , ferrite (magnet) , analytical chemistry (journal) , sol gel , grain size , scanning electron microscope , diffraction , sintering , mineralogy , chemical engineering , nanotechnology , metallurgy , composite material , optics , chemistry , chromatography , physics , engineering
This paper presents the synthesis and characterization of Y3Fe5O12, Gd3Fe5O12 and Dy3Fe5O12 nanoparticles by sol-gel method using initial salts solution of Y(NO3)3, Gd(NO3)3, Dy(NO3)3, Fe(NO3). The lattice constant, crystallite size and particle morphology of these ferrite garnet nanoparticles were studied by using X-ray diffraction and transmission electron microscopy (TEM). The results showed that the garnet samples prepared by this method were formed at 800oC, which is lower than the sintering temperature for ceramic bulk samples (1400oC). The particle size is in the range 25- 40 nm as observed via TEM image and the average particle size was found to be 37nm using Debye- Scherrer formula.