Role of double exchange interaction on the magnetic and electrical properties of Pr0.8Sr0.2MnO3 ferromagnetic insulating manganite

2006 ◽  
Vol 99 (8) ◽  
pp. 08Q315 ◽  
Author(s):  
N. Rama ◽  
V. Sankaranarayanan ◽  
M. S. Ramachandra Rao
2005 ◽  
Vol 72 (5) ◽  
Author(s):  
B. Dabrowski ◽  
S. Kolesnik ◽  
O. Chmaissem ◽  
T. Maxwell ◽  
M. Avdeev ◽  
...  

2015 ◽  
Vol 28 (10) ◽  
pp. 3117-3120 ◽  
Author(s):  
Yao Ying ◽  
Jingwu Zheng ◽  
Liang Qiao ◽  
Wangchang Li ◽  
Wei Cai ◽  
...  

2019 ◽  
Vol 142 (1) ◽  
pp. 50-54 ◽  
Author(s):  
Jiangtian Li ◽  
Deryn Chu ◽  
Hong Dong ◽  
David R. Baker ◽  
Rongzhong Jiang

Materials ◽  
2019 ◽  
Vol 12 (11) ◽  
pp. 1844 ◽  
Author(s):  
Hong-Zong Lin ◽  
Chia-Yang Hu ◽  
Po-Han Lee ◽  
Albert Zhong-Ze Yan ◽  
Wen-Fang Wu ◽  
...  

In this paper, we identify three possible candidate series of half-metals (HM) from Bi-based double perovskites Bi2BB′O6 (BB′ = transition metal ions) through calculations utilizing the density functional theory (DFT) and full-structural optimization, in which the generalized gradient approximation (GGA) and the strong correlation effect (GGA + U) are considered. After observing the candidate materials under four types of magnetic states, i.e., ferromagnetic (FM), ferrimagnetic (FiM), antiferromagnetic (AF), and nonmagnetic (NM), we found eight promising candidates for half-metallic materials. Under the GGA scheme, there are three ferromagnetic-half-metal (FM-HM) materials, Bi2CrCoO6, Bi2CrNiO6 and Bi2FeNiO6, and three FiM-HM materials, Bi2FeZnO6, Bi2CrZnO6 and Bi2CoZnO6. With implementation of the Coulomb interaction correction (GGA + U), we find two stable half-metallic materials: Bi2CrNiO6 and Bi2CrZnO6. We determine that the stability of some of these materials are tied to the double exchange interaction, an indirect interaction within the higher powers of localized spin interaction among transition metals via oxygen ions. Found in half-metallic materials, and especially those in the ferromagnetic (FM) state, the double exchange interaction is recognized in the FM-HM materials Bi2CrCoO6 and Bi2FeNiO6.


2015 ◽  
Vol 628 ◽  
pp. 251-256 ◽  
Author(s):  
Shile Zhang ◽  
Li Pi ◽  
Wei Tong ◽  
Shun Tan ◽  
Changjin Zhang ◽  
...  

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