Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829452 | Journal of Crystal Growth | 2005 | 8 Pages |
Abstract
We have succeeded in growing single crystals of the oxide spinels
GeNi2O4 and
GeCo2O4. Both materials have the pyrochlore lattice, and show antiferromagnetic-like order. Thus, magnetic frustrations and relevant phenomena are strongly expected. To obtain single crystals of these materials, we employed a conventional floating-zone method. For the crystal growth of
GeCo2O4, no severe difficulties were found. For
GeNi2O4, it was necessary to avoid intense the evaporation of
GeO2 due to the higher melting point of
GeNi2O4 than that of
GeCo2O4. Therefore, it was quite difficult to obtain single crystals of
GeNi2O4 by the same procedure as
GeCo2O4. We show the importance of the starting composition and crystal growth atmosphere for both spinels.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Shigeo Hara, Yoshiyuki Yoshida, Shin-Ichi Ikeda, Naoki Shirakawa, Michael K. Crawford, Kouichi Takase, Yoshiki Takano, Kazuko Sekizawa,