Title :
The magnetic properties of oriented high anisotropy Nd(Fe,Co,Mo) 12Nx samples
Author :
Navarathna, A. ; Hegde, H. ; Rani, R. ; Chen, K. ; Cadieu, F.J.
Author_Institution :
Dept. of Phys., Queens Coll., City Univ., New York, Flushing, NY, USA
fDate :
11/1/1993 12:00:00 AM
Abstract :
The magnetic properties of a series of highly aligned Nd(Fe,Mo) 12 and Nd(Fe,Co,Mo)12 samples are measured before and after nitriding. The samples are synthesized as approximately 2-μm thick sputtered film samples with the crystalline c-axis aligned perpendicular to that film surface. Part of the Mo in the NdFe11 Mo based ThMn12 phase is replaced with Co to enhance the available flux density. The saturation flux density for H perpendicular to the film surface is 12.9 kG without Co replacement, and is 15.5 kG with 50% of the Mo replaced with Co. The films are uniaxial before and after nitriding. Upon nitriding, the anisotropy field at room temperature increases from 5 to 130 kOe. For a NdFe11MoNx sample with some excess Nd, the static energy product for measurements perpendicular to the film surface is 30.2 MGOe at 293 K, and 43.5 MGOe at 10 K. For NdFe11Co0.05Mo0.5Nx the energy product at 293 K is 46.3 MGOe
Keywords :
cobalt alloys; ferromagnetic properties of substances; iron alloys; magnetic anisotropy; magnetic thin films; molybdenum alloys; neodymium alloys; permanent magnets; sputtered coatings; 10 K; 293 K; NdFe11Co0.05Mo0.5Nx; NdFe11MoNx; anisotropy field; crystalline c-axis; film surface; flux density; magnetic properties; nitriding; oriented high anisotropy Nd(Fe,Co,Mo)12Nx samples; room temperature; saturation flux density; sputtered film samples; static energy product; Anisotropic magnetoresistance; Energy measurement; Hysteresis; Iron; Magnetic flux; Magnetic properties; Neodymium; Sputter etching; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
