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Recently, due to the short supply of rare earth element, there is a great demand in developing the rare-earth-free permanent magnets with giant magnetic anisotropy. Among the rare-earth-free permanent magnetic materials of current interest, MnxGa alloys are potential candidates as permanent magnets [1]. In the MnxGa alloys, the ferromagnetic L10-MnGa phase and ferrimagnetic D022-Mn-3Ga phase are theoretically...
MnGa compounds possess several fascinating and useful properties, such as a large magnetocrys-talline anisotropy Ku, a high spin polarization P, a high Curie temperature TC and a flexible magnetization M. These results suggest that MnGa compounds are of potential candidates for spin-transfer-torque and rare-earth-free permanent magnet applications [1-2]. There are two most interesting tetragonal phases,...
Three series of -FePt based exchange coupled composite (ECC) films -FePt/Fe, and , with different magnetization configurations, on MgO substrates are studied. Though all series of samples show similar dependences of coercivity on the soft layer thickness, their thermal stabilities are much different. The perpendicular...
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