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Observation of a magnetically controllable Jahn Teller distortion in dysprosium vanadate at low temperatures
At around 14 K DyVO 4 undergoes a crystallographic phase transition from tetragonal to a lower symmetry, very probably orthorhombic. It is proposed that the distortion arises from a Jahn Teller splitting of an accidently degenerate pair of low lying Dy 3+ doublets. The distortion direction is correl...
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Published in: | Solid state communications 1970-05, Vol.8 (9), p.689-692 |
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Main Authors: | , , , , , , , |
Format: | Article |
Language: | English |
Citations: | Items that cite this one |
Online Access: | Get full text |
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Summary: | At around 14 K DyVO
4 undergoes a crystallographic phase transition from tetragonal to a lower symmetry, very probably orthorhombic. It is proposed that the distortion arises from a Jahn Teller splitting of an accidently degenerate pair of low lying Dy
3+ doublets. The distortion direction is correlated with the direction of principal
g value and can be influenced by applied magnetic fields. In the orthorhombic phase DyVO
4 orders antiferromagnetically with a Néel temperature of 3.0 K. The direction of moment alignment is the basal plane.
Le vanadate de dysprosium subit vers 14 K une transformation de phase allant de las symmétrie tétragonale à une symmetrie inférieure, très probablement orthorhombique. On propose que cette distortion est cause par le dédoublement Jahn Teller d'un pair de doublets degeneres de basse energie du Dy
3+. La direction de cette distortion est lieè a l'orientation du tenseur
g et peut être influence par l'application d'un champs magnétiques. Dans sa phase orthorhombique le DyVO
4 est ordonné d'une facon antiferromagnetique avec une temperature de Néel egale à 3 K. Les moments sont alignes dans le plan de base. |
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ISSN: | 0038-1098 1879-2766 |
DOI: | 10.1016/0038-1098(70)90196-1 |