Structural, magnetic and electrical transport properties of Co doping in LaKFeMoO6 double perovskite |
| |
Authors: | Guoyan Huo,Na Lü Fengrui Liu,Minghui Ren |
| |
Affiliation: | School of Chemistry and Environmental Science, Hebei University, Baoding 071002, PR China |
| |
Abstract: | The structural, magnetic and transport properties of La1+xK1−xFe1−yCoyMoO6 (0.0≤x≤0.1 and 0.1≤y≤0.2) series are studied. At room temperature, the crystal structure is a monoclinic system with space group P21/n. The antisite defect lowers with Co doping in LaKFe1−yCoyMoO6 series. However, it increases with the substitution of K by La. Magnetizations increase with the increase in Co content (x=0) and with the La substitution for K, respectively. All compounds demonstrate semiconducting behavior. Their electrical resistivities increase with Co content for LaKFe1−yCoyMoO6 and also increase with La for La1+xK1−xFe1−yCoyMoO6. For the LaKFe1−yCoyMoO6 the electrical transport behavior can be described by Mott variable range hopping model in the studied temperature range, whereas for the La1+xK1−xFe1−yCoyMoO6 (x≠0 and y≠0) the electrical transport behavior follows the Mott and ES variable range hopping model in high and low temperature ranges, respectively. Each sample exhibits a large magnetoresistance effect. |
| |
Keywords: | Inorganic compound Chemical synthesis X-ray diffraction Magnetic property Semiconductivity |
本文献已被 ScienceDirect 等数据库收录! |
|