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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Teoria semi-cl?ssica para super rede magn?tica formada por materiais ferromagn?tico e antiferromagn?tico

Fulco, Umberto Laino 11 October 1996 (has links)
Made available in DSpace on 2014-12-17T15:14:55Z (GMT). No. of bitstreams: 1 UmbertoLF_DISSERT.pdf: 2432679 bytes, checksum: 1b109fa2275d326e609166a96c26d626 (MD5) Previous issue date: 1996-10-11 / Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior / Apresentamos uma teoria din?mica de rede para uma super-rede consistindo de camadas magn?ticas alternadas dos tipos ferromagn?tica e antiferromagn?tica. Utilizando a equa??o de movimento semi-cl?ssica para o estudo dos m?gnons e usando o m?todo da matriz transfer?ncia obtemos explicitamente a equa??o da rela??o de dispers?o. O resultado ? ilustrado numericamente; as curvas s?o an?logas ?quelas encontradas para ondas de spin quando utilizado o modelo de Heisenberg

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