Ontology highlight
ABSTRACT:
SUBMITTER: Skjærvo SL
PROVIDER: S-EPMC6030299 | biostudies-literature | 2018 Jun
REPOSITORIES: biostudies-literature
Skjærvø S L SL Høydalsvik K K Blichfeld A B AB Einarsrud M-A MA Grande T T
Royal Society open science 20180620 6
The thermal evolution of the crystal structure and phase transitions of KNbO<sub>3</sub> were investigated by high-temperature powder X-ray diffraction and Rietveld refinement of the diffraction data. Two phase transitions from orthorhombic (<i>Amm</i>2) to tetragonal (<i>P</i>4<i>mm</i>) and from tetragonal to cubic ( Pm3¯m ) were confirmed, both on heating and cooling. Both phase transitions are first order based on the observed hysteresis. The mixed displacive and order-disorder nature of the ...[more]