Anisotropy magneto-crystalline

The first one is the bulk magneto crystalline anisotropy field. It depends on the chemical composition and crystallographic structure of the material. For instance, the anisotropy constant is 30 times larger in cobalt ferrite particles than in magnetite particles. 

Ev magneto-crystalline anisotropy energy barrier function... 

K single-ion magneto-crystalline anisotropy constant (energy per ion)... 

Kv magneto-crystalline anisotropy energy per volume of the material (= nK/v)... 

Of course, in general, the magnetization is not uniform, the particle is not an ellipsoid of rotation, the volume magneto-crystalline anisotropy is not uniaxial nor is it aligned with the particle shape, there are local orientational and magnitude variations of both SR and middle region magneto-crystalline anisotropies, etc. 

Fundamentals of SP fluctuatbns. In the calculation methods section, I described the recent and ongoing flurry of activity in the area of fundamental calculations of the SP supermoment reversal fluctuations themselves and their dependencies on applied field, underlying magneto-crystalline anisotropy, etc. Such work is vital in that it links the main microscopic fluctuations that determine sample response and its time evolution to their fundamental causes and the associated particle features and material properties. All areas of science and technology that involve magnetic nanoparticles can only benefit from these fundamental advances. 

Fig. 36. Comparison of the B(H) curves of rare earth-base materials having a large intrinsic magneto-crystalline anisotropy with the B(H) curve of Ticonal XX in which the magnetic hardness originates...

Wil] Total energy calculations Magneto-crystalline anisotropy as a function of Cu in Fei cCU , Pt... 

ErNis- Strong magneto-crystalline anisotropy is present here as well. The easy axis in the FM state is the c-axis. The ZF data (Gubbens et al. 1992, 1994a) revealed marked differences in muon spin depolarization rates for the two orthogonal crystal... 

Fig. 4.3-5 (a) Magnetostriction Xioo and Xm and magneto-crystalline anisotropy energy 1. (b) Electrical resistivity p and saturation polarization /g, as a function of the Si content in Fe—Si alloys... 

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