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Indexed by:期刊论文

Date of Publication:2008-10-30

Journal:JOURNAL OF PHYSICAL CHEMISTRY C

Included Journals:EI、SCIE、Scopus

Volume:112

Issue:43

Page Number:16818-16823

ISSN No.:1932-7447

Abstract:Ferroelectric PbHPO4 nanowires have been successfully prepared from a Pb(II)-IP6 (IP6, inositol hexakisphosphate acid) complex, a novel single-source precursor, by a hydrothermal method at 180 degrees C for 24 h. The structure and morphology of the as-prepared PbHPO4 nanowires and the Pb(II)-IP6 complex were systematically studied by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy. The possible formation mechanism for PbHPO4 nanowires is also proposed. The photoluminescence (PL) and ferroelectric properties of the obtained products were investigated in detail. PL measurements indicate that under the excitation of 375 nm the products have a broad emission peak at 460 nm. The ferroelectric hysteresis loop shows that the remnant polarization (PR) is equal to its maximum polarization (P-S). The one-dimensional conducting protons chains in the PbHPO4 crystal structure may be responsible for this unique ferroelectric hysteresis loop.