期刊
ADVANCED MATERIALS
卷 21, 期 28, 页码 2881-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200802094
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- JSPS
The crystallographic anisotropy in electromagnetic terahertz radiation from multiferroic BiFeO3 (100), (110), and (111) films suggests the ultrafast depolarization of ferroelectric order as a new mechanism of terahertz emission. This implies that the spontaneous polarization in ferroelectric materials can be manipulated in time scale of picoseconds, thus paving the way to ultrafast data-storage devices based on nonvolatile ferroelectric memories.
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