DocumentCode :
765049
Title :
Magnetic and Transport Properties of Transition Metal Doped Polycrystalline In 
O 
O Author :
Peleckis, G. ; Wang, X.L. ; Dou, S.X.
Author_Institution :
Inst. for Supercond. & Electron. Mater., Wollongong Univ., NSW
Volume :
42
Issue :
10
fYear :
2006
Firstpage :
2703
Lastpage :
2705
Abstract :
Synthesis and characterization of transition metal (TM)-doped In 2O3 oxide is reported. Most of the samples were found to be paramagnetic, and only Fe and Cr co-doped sample showed as light trace of ferromagnetism at 300 K with saturation magnetization M s= 0.35 emug/g. Measured transport properties revealed significant differences in transport among the samples. The absolute value of electrical resistivity for the In1.8Fe0.1Mn0.1O3 sample at 300 K was rho=9.4times103 Omega middot cm, while In 1.8Fe0.1Cr0.1O3 had rho=62 Omega middot cm at the same temperature. Furthermore, magnetoresistance (MR) studies of In1.8Fe0.1Cr0.1O3 showed that the sign of MR changes from negative (200 K), with MR(200K) =-0.2%, to positive T< 50 K reaching maximum absolute value at 10 K, i.e., MR(10K)=5.2%
Keywords :
chromium compounds; indium compounds; iron compounds; magnetic semiconductors; magnetoelectronics; magnetoresistance; manganese compounds; paramagnetic materials; 10 K; 300 K; In1.8Fe0.1Cr0.1O3; In1.8Fe0.1Mn0.1O3; diluted semiconductors; electrical resistivity; ferromagnetism; magnetic property; magnetoresistance effect; saturation magnetization; spintronics; transition metal doped poly crystalline; transport property; Chromium; Iron; Magnetic materials; Magnetic properties; Magnetic semiconductors; Saturation magnetization; Semiconductor materials; Superconducting magnets; Temperature; Zinc oxide; Diluted semiconductors; magnetoresistance (MR) effect; spintronics;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2006.878846
Filename :
1704411
Link To Document :
