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(Color online) Magnetic moment per TM atom vs tube diameter for various TM/nanotube hybrid structures. The three horizontal dotted lines represent the magnetism per atom of the freestanding hcp Ni, Co, and Fe nanowires, respectively.
Structural and magnetic properties of various TM/nanotube hybrid structures. is the equilibrium diameter of the pristine nanotube, the magnetic moment per TM atom of the TM/nanotube hybrid structure, the formation energy defined in Eq. (1), and the spin polarization defined in Eq. (2).
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