Magnetic and transport properties of transition metal doped polycrystalline In2O3

Authors

Germanas Peleckis, University of WollongongFollow
Xiaolin Wang, University of WollongongFollow
S X. Dou, University of WollongongFollow

RIS ID

14174

Publication Details

Peleckis, G, Wang, X & Dou, SX (2006), Magnetic and transport properties of transition metal doped polycrystalline In2O3, IEEE Transactions on Magnetics, 42(10), pp. 2703-2705.

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 Ye 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 In_1.8Fe_0.1Mn_0.1O₃ sample at 300 K was rho= 9.4 x 10³ Omega middot cm, while In_1.8Fe_0.1Cr_0.1O₃ had rho = 62 Omega middot cm at the same temperature. Furthermore, magnetoresistance (MR) studies of In_1.8Fe_0.1Cr_0.1O₃ showed that the sign of MR changes from negative (200 K), with MR_{(200 K)} = -0.2%, to positive T < 50 K reaching maximum absolute value at 10 K, i.e., MR_(10K) = 5.2 %.