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https://dipositint.ub.edu/dspace/handle/2445/8582| Title: | Nanocrystalline M-type hexaferrite powders: preparation, geometric and magnetic propertiess |
| Author: | Gornert, P. Pfeiffer, H. Sinn, E. Muller, Rainer Schuppel, W. Rosler, M. Batlle Gelabert, Xavier García del Muro y Solans, Montserrat Tejada Palacios, Javier Galí Medina, Salvador, 1949- |
| Keywords: | Materials nanoestructurats Propietats magnètiques Materials magnètics Anisotropia Substàncies amorfes Nanostructured materials Magnetic properties Magnetic materials Anisotropy Amorphous substances |
| Issue Date: | 1994 |
| Publisher: | IEEE |
| Abstract: | Co-Ti-Sn-Ge substituted M-type bariumhexaferrite powders with mean grain sizes between about 10 nm and about 1 ¿m and a narrow size distribution were prepared reproducibly by means of a modified glass crystallization method. At annealing temperatures between 560 and 580°C of the amorphous flakes nanocrystalline particles grow. They behave superparamagnetically at room temperature and change into stable magnetic single domains at lower temperatures. The magnetic volume of the powders is considerably less than the geometric one. However, the effective anisotropy fields are larger by a Factor of two to three. |
| Note: | Reproducció del document publicat a http://dx.doi.org/10.1109/20.312385 |
| It is part of: | IEEE Transactions on Magnetics, 1994, vol. 30, núm. 2 (Part 1-2), p. 714-716. |
| URI: | http://hdl.handle.net/2445/8582 |
| Related resource: | http://dx.doi.org/10.1109/20.312385 |
| ISSN: | 0018-9464 |
| Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada) |
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