Anzeige
Erschienen in:
01.06.2014
Correlation between crystal structures and vibration modes of Ba[(Zn1−x Mg x )1/3Nb2/3]O3 ceramics as a function of sintering temperatures
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 6/2014
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Ba[(Zn1−x
Mg
x
)1/3Nb2/3]O3 (short for BZMN, x = 0.4, 0.6, 0.8) solid solution ceramics were sintered by conventional solid-state sintering technique at different temperatures. Effects of sintering temperatures on phonon modes and crystal structures of BZMN ceramics were investigated by X-ray diffraction and vibration spectra (Raman spectroscopy as well as Fourier transform far-infrared reflection spectroscopy) techniques. The results reveal that sintering temperatures have an obviously influence on phonon modes, which are closely related to the 1:2 ordered structures. For the samples where x = 0.4, they possess the cubic structure (Pm3m), and the ordering degree decreases with the increase in the temperature. For the samples where x = 0.6, phase transition occurs after sintered at 1,500 °C, i.e., a 1:2 ordered monoclinic unit cell is formed. For the samples where x = 0.8, they possess the hexagonal structures (\(P\bar{3}m1\)), and the ordering degree increases with the increase in the temperatures.