Details

Autor(en) / Beteiligte

• Kamishima, K.
• Mashiko, T.
• Kakizaki, K.
• Sakai, M.
• Watanabe, K.
• Abe, H.

Titel

Synthesis and magnetic characterization of Sr-based Ni2X-type hexaferrite

Ist Teil von

• AIP advances, 2015-10, Vol.5 (10), p.107132-107132-10

Ort / Verlag

Melville: American Institute of Physics

Erscheinungsjahr

2015

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• We have investigated the synthesis conditions, and the magnetic properties of the Sr2Ni2X-type hexagonal ferrite, Sr2Ni2Fe28O46. The Sr2Ni2X-type hexaferrite was synthesized at 1240∘C. The spontaneous magnetization at 5 K was 44.2 μB/f.u., suggesting that most of the Ni2+ ions are at the up-spin octahedral sites in the spinel-structure blocks within the model of a Néel-type collinear ferrimagnetic structure. The Curie temperature of the Sr2Ni2X-type hexaferrite was estimated to be TC[Sr2Ni2X] = 472∘C. This is consistent with the difference of the block stacking structures of SrM-type, Sr2Ni2X-type, SrNi2W-type, and nickel spinel ferrites.