Phase Relations in the System Al2O3–B2O3–Nd2O3 |
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Authors: | Yangyang Ji Jingkui Liang Zhan Chen Sishen Xie |
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Affiliation: | Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, China |
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Abstract: | The phase relations at a temperature below "subsolidus" in the system Al2O3–B2O3–Nd2O3 are reported. Specimens were prepared from various compositions of Al2O3, B2O3, and Nd2O3 of purity 99.5%, 99.99%, and 99.9%, respectively, and fired at 1100°C. There are six binary compounds and one ternary compound in this system. The ternary compound, NdAl3(BO3)4 (NAB), has a phase transition at 950°C ± 15°C. The high-temperature form of NAB has a second harmonic generation (SHG) efficiency of KH2PO4 (KDP) of the order of magnitude of the form which has been used as a good self-activated laser material, and the low-temperature form of NAB has no SHG efficiency. |
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Keywords: | neodymium oxide alumina boria phase transition lasers |
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