ベルヌーイ法による(Mg, Mn)O-Al<SUB>2</SUB>O<SUB>3</SUB>とFe<SUB>3</SUB>O<SUB>4</SUB>の結晶成長とその内部組織

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  • Growth of (Mg, Mn)O-Al<SUB>2</SUB>O<SUB>3</SUB> and Fe<SUB>3</SUB>O<SUB>4</SUB> Single Crystals by the Verneuil Method and Observation of Their Internal Structures
  • ベルヌーイ法による(Mg,Mn)O-Al2O3とFe3O4の結晶成長とその内部組織
  • ベルヌーイホウ ニヨル Mg Mn O Al2O3 ト Fe3O4 ノ ケッシ
  • Growth of (Mg,&nbsp;Mn)O-Al<SUB>2</SUB>O<SUB>3</SUB> and Fe<SUB>3</SUB>O<SUB>4</SUB> Single Crystals by the Verneuil Method and Observation of Their Internal Structures

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説明

Single Crystals of two kinds of spinel-type oxide have been grown by the Verneuil method. (Mg, Mn)O-Al2O3 showed a distinct growth hillock on the top of the crystal and a characteristic distribution of dislocations. A more or less regular network of subboundaries is observed in the cross section, suggesting the presence of an easy atomic movement along the ⟨110⟩ direction which is not vertical to the growth direction and is located near the solid liquid interface in the growing process. This assumption explains the observed character of the growth hillock and of the internal structure, as being due to a polygonization of remaining edge dislocations. The characteristic of side planes observed in grown crystals of MgO-2.5Al2O3 as reported by Nakano et al. may also be explained by the same assumption. A single crystal of Fe3O4 was grown successfully. However, it contains a small amount of precipitates of α-Fe2O3.

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  • 日本金属学会誌

    日本金属学会誌 40 (4), 366-375, 1976

    公益社団法人 日本金属学会

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