Tunable Magnetism in Metal Adsorbed Fluorinated Nanoporous Graphene

Overview

Journal Sci Rep

Specialty Science

Date 2016 Aug 25

PMID 27554975

Citations 5

Authors

Pankaj Kumar

Vinit Sharma

Fernando A Reboredo

Li-Ming Yang

Raghani Pushpa

Affiliations

Soon will be listed here.

Abstract

Developing nanostructures with tunable magnetic states is crucial for designing novel data storage and quantum information devices. Using density functional theory, we investigate the thermodynamic stability and magnetic properties of tungsten adsorbed tri-vacancy fluorinated (TVF) graphene. We demonstrate a strong structure-property relationship and its response to external stimuli via defect engineering in graphene-based materials. Complex interplay between defect states and the chemisorbed atom results in a large magnetic moment of 7 μB along with high in-plane magneto-crystalline anisotropy energy (MAE) of 17 meV. Under the influence of electric field, spin crossover effect accompanied by a change in the MAE is observed. The ascribed change in spin-configuration is caused by the modification of exchange coupling between defect states and a change in the occupation of d-orbitals of the metal complex. Our predictions open a promising way towards controlling the magnetic properties in graphene based spintronic and non-volatile memory devices.

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