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>Organic hydrogenhyphen;bonded dielectrics: Quantum paraelectricity based on tautomerization of 9hyphen;hydroxyphenalenone derivatives
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Organic hydrogenhyphen;bonded dielectrics: Quantum paraelectricity based on tautomerization of 9hyphen;hydroxyphenalenone derivatives
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机译：Organic hydrogenhyphen;bonded dielectrics: Quantum paraelectricity based on tautomerization of 9hyphen;hydroxyphenalenone derivatives
Dielectric properties based on tautomerization in 9hyphen;hydroxyphenalenone derivatives were examined. While the 5hyphen;methyl derivative2exhibits an antiferroelectric transition at 41 K, such a phase transition was not observed in 5hyphen;bromo derivative3down to 4.2 K. Suppression of the phase transition in the latter may be interpreted in terms of quantum paraelectricity based on protonhyphen;tunneling along the hydrogen bond. The reason for the appearance of antiferroelectric ordering coupled with the phase transition in2may be ascribed to reduction of the tunneling frequency due to symmetry breaking caused by the methyl group. The present system can be regarded as zerohyphen;dimensional hydrogenhyphen;bonded system and is interesting in reference to inorganic hydrogenhyphen;bonded dielectrics.
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