TY - JOUR
T1 - Growth and phase transition of Sr3Zr2O7 single crystals
AU - Fukasawa, Ikuya
AU - Maruyama, Yuki
AU - Yoshida, Suguru
AU - Fujita, Koji
AU - Takahashi, Hidehiro
AU - Ohgaki, Masataka
AU - Nagao, Masanori
AU - Watauchi, Satoshi
AU - Gopalan, Venkatraman
AU - Tanaka, Katsuhisa
AU - Tanaka, Isao
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - The melting behavior of Ruddlesden-Popper type hybrid improper ferroelectric Sr3Zr2O7 phase in the ZrO2–SrO pseudo-binary system was investigated, and its single crystals were successfully grown. A series of the slow-cooling floating zone experiments revealed that Sr3Zr2O7 melts incongruently into SrZrO3 phase and a liquid and that the compositional range where Sr3Zr2O7 and a liquid coexist is located around 70 mol% SrO composition. Based on the results, we attempted to grow Sr3Zr2O7 single crystals by the traveling solvent floating zone method using SrO-excess solvent and feed. Consequently, many small single crystals of Sr3Zr2O7 phase with several millimeters in size were discovered in the as-grown boules covered with SrO phase. The phase transition behavior of the grown crystals was investigated by differential thermal analysis with polarizing optical microscopy as well as by optical second harmonic generation measurements. We directly observed a reconstruction of orthorhombic twin domains in Sr3Zr2O7 single crystals accompanied by the first-order ferroelectric transition at about 410 °C.
AB - The melting behavior of Ruddlesden-Popper type hybrid improper ferroelectric Sr3Zr2O7 phase in the ZrO2–SrO pseudo-binary system was investigated, and its single crystals were successfully grown. A series of the slow-cooling floating zone experiments revealed that Sr3Zr2O7 melts incongruently into SrZrO3 phase and a liquid and that the compositional range where Sr3Zr2O7 and a liquid coexist is located around 70 mol% SrO composition. Based on the results, we attempted to grow Sr3Zr2O7 single crystals by the traveling solvent floating zone method using SrO-excess solvent and feed. Consequently, many small single crystals of Sr3Zr2O7 phase with several millimeters in size were discovered in the as-grown boules covered with SrO phase. The phase transition behavior of the grown crystals was investigated by differential thermal analysis with polarizing optical microscopy as well as by optical second harmonic generation measurements. We directly observed a reconstruction of orthorhombic twin domains in Sr3Zr2O7 single crystals accompanied by the first-order ferroelectric transition at about 410 °C.
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U2 - 10.1016/j.jcrysgro.2023.127241
DO - 10.1016/j.jcrysgro.2023.127241
M3 - Article
AN - SCOPUS:85159060755
SN - 0022-0248
VL - 615
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
M1 - 127241
ER -