A comparative study of small 3d-metal oxide (FeO): N, (CoO)n, and (NiO)n clusters

Geometrical and electronic structures of the 3d-metal oxide clusters (FeO)n, (CoO)n, and (NiO)n are computed using density functional theory with the generalized gradient approximation in the range of 1 ≤ n ≤ 10. It is found that the cluster geometries are similar in the (FeO)n and (CoO)n series but noticeably different in the (NiO)n series for several values of n. All of the lowest total energy states are found to possess relatively small spin multiplicities and are either antiferromagnetic or ferrimagnetic except for the states of (NiO)3, (NiO)4, (NiO)9, and (NiO)10, which are ferromagnetic. The computed polarizabilities per atom undergo a steep decrease when compared to the atomic values of the MO monomers (M = Fe, Co, and Ni). Surprisingly, the polarizability does not strongly depend on either M or n in all the considered series when n varies from 3 to 10. The binding energies per atom are the largest in the (FeO)n series, followed by the binding energies of (CoO)n and (NiO)n. © The Owner Societies 2016.

Авторы
Gutsev G.L.1 , Belay K.G.1 , Bozhenko K.V. 2, 5 , Gutsev L.G.3 , Ramachandran B.R.4
Редакторы
-
Издательство
-
Номер выпуска
40
Язык
Английский
Страницы
27858-27867
Статус
Опубликовано
Подразделение
-
Номер
-
Том
18
Год
2016
Организации
  • 1 Department of Physics, Florida A and M University, Tallahassee, FL 32307, United States
  • 2 Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russian Federation
  • 3 Department of Chemistry and Biochemistry, Florida State University, Tallahassee, 32306, United States
  • 4 College of Engineering and Science, Louisiana Tech University, Ruston, LA 71272, United States
  • 5 Department of Physical and Colloid Chemistry, Peoples' Friendship University of Russia, Moscow, 117198, Russian Federation
Ключевые слова
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Дата создания
19.10.2018
Дата изменения
19.10.2018
Постоянная ссылка
https://repository.rudn.ru/ru/records/article/record/4439/