Characterization of SHG candidate crystals in barium aluminum (gallium) borates

Miyazaki, Akimitsu; Kimura, Hideo; Maiwa, Koji; Nakamura, Hiroaki; Kannan, Chinna Venkadasamy

doi:10.1002/crat.200310191

Cited by 3 publications

(2 citation statements)

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“…The first step is because of the loss of a water molecule of crystallization, and the second step at about 700 °C corresponds to the dehydration of the hydrogen borate group and loss of a half water molecule. Compound 1 decomposes into Ba 2 Al 2 B 8 O 17 (denoted as 2 ) at 740 °C according to the following equation: Compound 2 melts incongruently at 810 °C, which is consistent with the report by Kimura et al…”

Section: Resultssupporting

confidence: 89%

“…Compound 1 is stable up to 700 °C and decomposes into crystalline Ba 2 Al 2 B 8 O 17 (denoted as 2 ) at 750 °C (Figure S4). Compound 2 is stable at 800 °C and decomposes into a poorly crystalline material at 850 °C. Therefore, the endothermic peak at about 810 °C in the DSC curve corresponds to the incongruent melting point of 2 .…”

Section: Experimental Sectionmentioning

confidence: 99%

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High-Temperature, High-Pressure Hydrothermal Synthesis, Crystal Structure, Thermal Stability, and Solid State NMR Spectroscopy of an Aluminum Borate, Ba[AlB₄O₈(OH)]

2018

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A new aluminum borate, Ba[AlBO(OH)], has been synthesized under high-temperature, high-pressure hydrothermal conditions at 550 °C and 1400 bar and its structure characterized by single-crystal X-ray diffraction, IR, and MAS B, andAl NMR spectroscopy. It crystallizes in the monoclinic space group P2/n with a = 7.0695(5) Å, b = 15.108(1) Å, c = 7.0746(5) Å, β = 93.593(2)°, and Z = 4. Its 2D layer structure is formed of corner-sharing BO(OH) clusters and AlO tetrahedra with the charge-compensating Ba cations between the layers. While the same in the framework composition, the title compound and the hydrate, Ba[AlBO(OH)]·HO, differ greatly in structure. Although the title compound contains an OH group, it is thermally stable up to 740 °C and then decomposes into BaAlBO, as indicated by high-temperature DSC/TG analysis and powder X-ray diffraction.

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