Crystal structure analysis of NaNbO in high-temperature phase

Aso, Seiyu*; Matsuo, Hiroki*; Noguchi, Yuji*; Yoneda, Yasuhiro ; Morikawa, Daisuke*; Tsuda, Kenji*

Recently, higher energy storage density than that of typical ferroelectric BaTiO has been achieved in NaNbO-based antiferroelectrics by utilizing the electric-field-induced phase transition between the antiferroelectric (AFE) and ferroelectric (FE) phases. In this study, we attempted to identify the space group using synchrotron X-ray diffraction and convergent electron diffraction in order to elucidate the full picture of the phase transition behavior in NaNbO and Ca-doped NaNbO. On the other hand, the Ca-doped sample showed that the space group is Pnma, which is consistent with the results obtained by convergent electron diffraction measurements.

Language	:	Japanese
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Meeting title	:	日本セラミックス協会2024年年会
Held date	:	2024/03
Location (city)	:	熊本
Location (country)	:	日本
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Keywords	:	no keyword
Research Facility	:	SPring-8(大型放射光施設)
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Registration No. : BB20231454
JAEA Abstracts No. :
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