Hexagonal ferrites: a unified model of the (TS) n T series in superspace
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چکیده
منابع مشابه
Hexagonal ferrites: a unified model of the (TS)nT series in superspace.
Hexagonal ferrites represent an extensive family of mixed-layer magnetic materials with periods up to 1500 A along the stacking direction, probably constituting the largest unit cells in the inorganic realm. The (TS)(n)T subfamily includes P3m1 and R3m structures that can be derived from Y ferrite Ba(2)M(2)Fe(12)O(22) (M = Zn, Fe, Co, Mg, Mn) by introducing stacking faults. A unified (3 + 1)-di...
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Dipolar Energy Anisotropy in Hexagonal Ferrites
The dipolar energy contribution to the anisotropy of M, Wand Y-type hexagonal fenites is examined. The geometrical coeff~cients kij are given, so that a calculation for any hexaferrite with the same structure can be effected. Differences in the results of previous works are explained as due to a simplifying assumption, the validity of which is restricted. The ambiguity regarding dipolar energy ...
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ژورنال
عنوان ژورنال: Acta Crystallographica Section B Structural Science
سال: 2007
ISSN: 0108-7681
DOI: 10.1107/s0108768107038104