Fe-doped SnO2: A Quantum-chemical Approach

Автори A. Stashans , P. Puchaicela
Приналежність

Grupo de Fisicoquímica de Materiales, Universidad Técnica Particular de Loja, Apartado 11-01-608 Loja, Ecuador

Е-mail arvids@utpl.edu.ec, ppuchaicela@utpl.edu.ec
Випуск Том 7, Рік 2015, Номер 2
Дати Одержано 09.02.2015, у відредагованій формі - 30.04.2015, опубліковано online - 10.06.2015
Посилання A. Stashans, P. Puchaicela, J. Nano- Electron. Phys. 7 No 2, 02032 (2015)
DOI
PACS Number(s) 61.72.S –, 61.72.U –, 71.15.Mb
Ключові слова DFT+U (2) , SnO2 (11) , Impurity doping, Microstructure (21) , Magnetism (9) .
Анотація We report first-principles results obtained on Fe impurity incorporation into the SnO2 material. Different impurity concentrations have been taken into consideration when computing structural, electronic and magnetic properties of the material. DFT + U methodology within the GGA approach applied to a 96-atom supercell allowed us to establish the equilibrium geometry of the system, which consists of six defect-nearest oxygens shifting towards the Fe impurity. Antiparallel magnetic alignment between the electrons of the Fe 3d and impurity-neighbouring O 2p atomic orbitals forming the FeO6 complex has been found.

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