Tunable magnetism in metal adsorbed fluorinated nanoporous graphene
نویسندگان
چکیده
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.
منابع مشابه
Exchange interactions and frustrated magnetism in single-side hydrogenated and fluorinated graphene
متن کامل
Investigation of doping effects on magnetic properties of the hydrogenated and fluorinated graphene structures by extra charge mimic.
The effects of electron and hole doping on the magnetic properties of hydrogenated and fluorinated graphene structures are theoretically investigated by additional charge mimic. The studied hydrogenated and fluorinated graphene with different electronic structures display different relations between magnetism and charge, in which the spin moment of the former has the maximum value without charg...
متن کاملTunable superconducting phase transition in metal-decorated graphene sheets.
We have produced graphene sheets decorated with a nonpercolating network of nanoscale tin clusters. These metal clusters both efficiently dope the graphene substrate and induce long-range superconducting correlations. We find that despite structural inhomogeneity on mesoscopic length scales (10-100 nm), this material behaves electronically as a homogenous dirty superconductor with a field-effec...
متن کاملSurface spin disorder and exchange-bias in hollow maghemite nanoparticles
Related Articles Contact resistance as a probe of near-interface ferromagnetism in GaMnAs/Cu bilayers Appl. Phys. Lett. 100, 212403 (2012) Magnetic properties of ZnO nanoclusters J. Appl. Phys. 111, 084321 (2012) Mechanically tunable magnetism on graphene nanoribbon adsorbed SiO2 surface J. Appl. Phys. 111, 074317 (2012) Surface wave resonances supported on a square array of square metallic pil...
متن کاملTunable photoluminescence and spectrum split from fluorinated to hydroxylated graphene.
Tunable control over the functionalization of graphene is significantly important to manipulate its structure and optoelectronic properties. Yet the chemical inertness of this noble carbon material poses a particular challenge for its decoration without forcing reaction conditions. Here, a mild, operationally simple and controllable protocol is developed to synthesize hydroxylated graphene (HOG...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 6 شماره
صفحات -
تاریخ انتشار 2016