Electric field control of the magnetic anisotropy energy of double-vacancy graphene decorated by iridium atoms

To solve the fundamental dilemma in data storage applications, it is crucial to manipulate the magnetic anisotropy energy (MAE). Herein, using first-principles calculations, we predict that the system of double-vacancy graphene decorated by iridium atoms possesses high stability, giant MAE, perpendi...

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Published inPhysical chemistry chemical physics : PCCP Vol. 18; no. 16; pp. 1155 - 11555
Main Authors Ge, Gui-Xian, Li, Ying-Bin, Wang, Guang-Hou, Wan, Jian-Guo
Format Journal Article
LanguageEnglish
Published England 28.04.2016
Subjects
Decoration
Electric fields
Ferromagnetism
Graphene
Information storage
Iridium
Magnetic anisotropy
Nanostructure
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Summary:To solve the fundamental dilemma in data storage applications, it is crucial to manipulate the magnetic anisotropy energy (MAE). Herein, using first-principles calculations, we predict that the system of double-vacancy graphene decorated by iridium atoms possesses high stability, giant MAE, perpendicular-anisotropy and long-range ferromagnetic coupling. More importantly, the amplitude of MAE can be manipulated by electric fields. This is due to the change in the occupation number of Ir-5d orbitals. The present hybrid system could be a high-performance nanoscale information storage device with ultralow energy consumption. The system of Ir@DV possesses large MAE and the amplitude of MAE can be easily manipulated by electric fields.
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ISSN:1463-9076
1463-9084
DOI:10.1039/c6cp01009a