Electronic, thermoelectric and magnetic properties of La2NiMnO6 and La2CoMnO6

被引：76
|
作者：
Ullah, Mazhar [1 ]
Khan, Saleem Ayaz [2 ]
Murtaza, G. [1 ]
Khenata, R. [3 ]
Ullah, Naeem [4 ]
Bin Omran, S. [5 ]
机构：
[1] Islamia Coll Univ, Dept Phys, Mat Modeling Lab, Peshawar, Pakistan
[2] Univ W Bohemia, New Technol Res Ctr, Plzen 30614, Czech Republic
[3] Univ Mascara, Fac Sci & Technol, LPQ3M Lab, Mascara, Algeria
[4] GDC Darra Adam Khel, Dept Phys, FR Kohat, KPK, Pakistan
[5] King Saud Univ, Coll Sci, Dept Phys & Astron, Riyadh 11451, Saudi Arabia
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2015年 / 377卷
关键词：
Double pervoskites; FP-LAPW; Electronic Properties; Thermoelectric properties; ROOM-TEMPERATURE; MAGNETORESISTANCE;
D O I：
10.1016/j.jmmm.2014.10.069
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effect of spin polarization on the electronic and thermoelectric properties of double pervoskites La2NiMnO6 and La2CoMnO6 are studied using the lull potential linearized augmented plane wave method. Further magnetic properties of the compound are also determined. Both compounds are indirect bandgap ferromagnetic materials. La2NiMnO6 compound has a large band gap energy as compared to La2CoMnO6 compound in both spin up and spin down states. The electrical conductivity, thermal conductivity and thermoelectric power increase with temperature for both the compounds in the spin up state, while the spin down state unchanged with the increase of temperature. There is no significant variation observed in Seebeck coefficient S with temperature for spin up state while the Seebeck coefficient decrease with he increase of temperature in both compounds for spin down state. The calculated total magnetic moments for both compounds reveals the strong ferromagnetic nature. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：197 / 203
页数：7
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