caa a22 4500 445828579 CHVBK 20180317145306.0 cr unu---uuuuu 170323e20110801xx s 000 0 eng 10.1007/s10854-010-0236-2 doi (NATIONALLICENCE)springer-10.1007/s10854-010-0236-2 Low-temperature synthesis of Sr0.3Ba0.7Nb2O6 ultrafine powder and its characteristics [Elektronische Daten] [Guo-hua Chen, Jun-tao Liu, Hua-rui Xu, Chang-rong Zhou, Min-hong Jiang, Xin-yu Liu] Ultrafine strontium barium niobate (Sr0.3Ba0.7Nb2O6, SBN30) powders were prepared by urea method starting from a precursor solution constituting of Sr (NO3)2, Ba (NO3)2, NbF5, urea and polyvinyl alcohol (PVA) as surfactant. Their structural behavior and morphology were examined by means of X-ray diffractometry (XRD) and Scanning electron microscopy (SEM). The results showed that the SBN30 powders crystallized to a pure tetragonal phase at annealing temperatures as low as 750°C. The average particle size of SBN powders subjected to 750°C was of the order of 150-300nm. With increasing calcination temperature,however, the average particle size of the calcined powders increased. The SBN30 ceramic prepared from urea method can be sintered at temperature as low as 1,225°C. The transition temperature from the ferroelectric phase to the paraelectric phase and the relative dielectric permittivity of the SBN30 powder were less than the corresponding values of the bulk ceramic. The permittivity and loss tangent (tan δ) at room temperature (1kHz) was found to be 930 and below 0.025. Springer Science+Business Media, LLC, 2010 Chen Guo-hua School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Liu Jun-tao School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Xu Hua-rui School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Zhou Chang-rong School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Jiang Min-hong School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Liu Xin-yu School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 915-919 0957-4522 22:8<915 2011 22 10854 https://doi.org/10.1007/s10854-010-0236-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10854-010-0236-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Guo-hua School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Liu Jun-tao School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Xu Hua-rui School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Zhou Chang-rong School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Jiang Min-hong School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 700 1- Liu Xin-yu School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China aut NATIONALLICENCE 773 0- Journal of Materials Science: Materials in Electronics Springer US; http://www.springer-ny.com 22/8(2011-08-01), 915-919 0957-4522 22:8<915 2011 22 10854 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer