Growth and raman scattering of aluminium gallium orthophosphate piezoelectric crystals

✍ Scribed by Hairui Xia; Jiyang Wang; Lixia Li; Zhigiang Zou

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 346 KB
• Volume: 40
• Category: Article
• ISSN: 0960-8974
• DOI: 10.1016/s0960-8974(00)00012-7

✦ Synopsis

A new series of non-ferroelectric crystals, the piezoelectric solid solution aluminium gallium orthophosphate All_xGaxPO4 (AGP, 0 < x < 1) system has been successfully developed by a hydrothermal method. The AGP Crystal with x = 0.10 shows a phase transition temperature T~_~ = 587 _+ 3 °C with a cell parameters a = b = 0.49386(3) and c = 1.09563(2) nm. Raman spectra including directional dispersion in AGP are similar to those from o~-A1PO4 and a-quartz crystals, indicating all of them belong to an isomorphic family, the short-range interaction being dominant in AGP. Comparison with c~-A1PO4 crystals, there exists an apparent red shift of the mode frequency and a smaller TO/LO mode splitting of the E species in the AGP crystals.