New dielectric material systems of SrxNd2(1–x)/3TiO3 perovskites-like at microwave frequencies

Synergistic modification of properties in Ba[(Zn0.8Mg0.2)1/3Nb2/3]O3 ceramics through ordered domain engineering

“…Most researches before focus on the relationship between tilted structure and restoring force 18,21–23 . As previously reported for the tilted perovskite structure, the increased thermal energy is supposed to be absorbed as the tilting recovers and it may contribute less to the restoring force on the ionic polarization.…”

“…The variation can be explained by the bond‐valence theory. The increased B–O bond valence indicates that the bond strength between oxygen and B‐site cation increases, 19,21,27 so the Young's modulus is increased after annealing at 1350 and 1400°C. The increase of the Young's modulus as the bond valence decreases in the sample annealed at 1450°C is attributed to the extended extra ordered structure.…”

“…Most researches before focus on the relationship between tilted structure and restoring force. 18,[21][22][23] As previously reported for the tilted perovskite structure, the increased thermal energy is supposed to be absorbed as the tilting recovers and it may contribute less to the restoring force on the ionic polarization. In the un-tilted structure, the cation ordering arrangement causes a distortion of Nb 5+ , and subsequently results in three long Nb-O1 bonds and three short Nb-O2 bonds (see Table 2).…”