Preparation of nanoforms of layered piezoelectric of systems BI2O3-TA(2)O(5)-AO (A=CA,SR,BA)

0376089 - ÚACH 2012 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Štarman, S. - Matz, V. - Kváča, Z. - Mohyla, M. - Olšák, V. - Plocek, Jiří - Vaněk, Přemysl - Tylš, B.
Preparation of nanoforms of layered piezoelectric of systems BI2O3-TA(2)O(5)-AO (A=CA,SR,BA).
NANOCON 2011. Conference proceedings. Ostrava: Tanger Ltd, 2011, s. 160-165. ISBN 978-80-87294-27-7.
[NANOCON 2011. International Conference /3./. Brno (CZ), 21.09.2011-23.09.2011]
Grant CEP: GA MPO 2A-1TP1/092
Výzkumný záměr: CEZ:AV0Z40320502; CEZ:AV0Z10100520
Klíčová slova: tantalates * piezoelectricity * solgel * acoustic * measurement
Kód oboru RIV: CA - Anorganická chemie

Based on the known Aurivillius phases types ABi2Ta2O9 and A2BiTaO6 ( A=Ca, Sr, Ba) were supplemented with new compositions of layered tantalates, which resulted the possibility of the existence of a new phase Sr2BiTaO6. Ternary compounds with piezoelectric structure were prepared as nanoforms by solgel reactions of homogeneous acetate Bi, Ta, A and subsequent annealing in a controlled atmosphere. Annealing temperature was determined from DSC curves based on the weight loss and phase transitions. Composition and structure of nanocrystals has been analyzed by X-ray diffraction (XRD), scanning nanomorphology (SEM) and acoustic measurements.
Trvalý link: http://hdl.handle.net/11104/0208586