J. Phys. IV France 07 (1997) C1-757-C1-758
The Role of Technological Factors (Parameters of LPE) in Defect Generation and Formation of Properties of Magnetic Bubble MaterialsV. Kostishyn1, L. Letyuk1, V. Medved'1, A. Morchenko1 and V. Myzina2
1 Moscow State Institute of Steel and Alloys (Technological University), Leninsky prospect, 4, Moscow, 117936, Russia
2 Institute of General Physics, Russian Academy of Science, Vavilov Street, 38, Moscow, 117942, Russia
It is shown that in a value range of molar parameter R5 = 0.31 - 0.50 the magnetic garnet films (YSmLuCa)3(FeGe)5O12 have overstoichiometric amount of Ca2+ ions. Their concentration grows with the increase R5. It is established that charge neutralization of excess Ca2+ ions is executed predominantly by V+O2- V2+O2- vacancies. The contribution of oxygen vacancies in coercive force and magnetic anisotropy of films is determined.
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