| ZrV_2O_7的热膨胀和非简谐振动(英文) |
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| 作者姓名： | SAKUNTALA T ARORA A K RAO Rekha |
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| 作者单位： | 1. 印度巴巴原子研究中心高压物理部,孟买 400085,印度
2. 英迪拉甘地原子研究中心材料科学部,马德拉斯 603102,印度 |
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| 摘 要： | 因零膨胀材料在工程上的潜在应用,近10多年来,对材料的热膨胀特性得以深入了解.本文对ZrW2O8的负热膨胀现象的研究进展进行了简要回顾,并特别指出理解非简谐振动的重要性.讨论了ZrV2O7的声了特性和非简谐振动,其负热膨胀的高温相和具有正的热膨胀的低温相特征. 此外,还比较了ZrV2O7和ZrW2O8的热膨胀特性.
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| 关 键 词： | 热膨胀 Raman光谱学 非简谐振动 钒酸锆 钨酸锆 |
THERMAL EXPANSION AND ANHARMONICITY IN ZrV_2O_7 |
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| SAKUNTALA T,ARORA A K,RAO Rekha.THERMAL EXPANSION AND ANHARMONICITY IN ZrV_2O_7[J].Journal of The Chinese Ceramic Society,2009,37(5). |
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| Authors: | SAKUNTALA T ARORA A K RAO Rekha |
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| Affiliation: | 1.High Pressure Physics Division;Bhabha Atomic Research Center;Mumbai 400085 India;2.Materials Science Division;Indira Gandhi Center for Atomic Research;Kalpakkam 603102;India |
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| Abstract: | Understanding of the thermal expansion behaviour of materials has substantially evolved over the last decade partly owing to their potential application in engineering zero thermal expansion materials.Recent understanding of the phenomenon in ZrW2O8 is briefly reviewed and the importance of understanding the vibrational anharmonicity is highlighted.Phonon behaviour and anharmonicity in the compound ZrV2O7 in the both the high and the low temperature phases,exhibiting negative and positive thermal expansion ... |
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| Keywords: | thermal expansion Raman spectroscopy anharmonicity zirconium vanadate zirconium tungstate |
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