## Abstract DC electrical conductivity studies were carried out along the three crystallographic axes for Tripotassium sodium diselenate (K~3~Na(SeO~4~)~2~ or KNSe). Earlier studies of phase transition in this crystal show successive phase transitions at 334 K, 346 K, 730 K, and 758 K. In this pape
AFM investigations of K3Na(SeO4)2 single crystals
✍ Scribed by R Czajka; B Mróz; S Mielcarek; S Kaszczyszyn
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- English
- Weight
- 382 KB
- Volume
- 48
- Category
- Article
- ISSN
- 0042-207X
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✦ Synopsis
K,Na(SeO,), single crystal cleaved surfaces were imaged by means of an atomic force microscope in air. The images revealed atomically flat terraces 500 nm wide, with steps, this height being the multiple of the K,Na(SeO,), c/2 lattice constant. For the first time, atomic resolution was observed on the KNSe crystal surface in air. Correlation between the images obtained and crystal structure is discussed,
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Differential scanning calorimetry (DSC) and X-ray diffraction measurements have been performed on pentasodium trihydrogen tetraselenate dihydrate Na 5 H 3 (SeO 4 ) 4 •2H 2 O and deuterated Na 5 D 3 (SeO 4 ) 4 •2D 2 O crystals. Any distinct anomaly around 428 K in the DSC curves for both crystals is