Ferroelectric films of lead germanate prepared by modified chemical deposition techniquesстатья
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Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
Аннотация:The high adhesive, single crystal lead germanate films of 5–105 μm in thick were fabricated on platinum substrates by in situ sol-gel technique. The stoichiometry of the films was closed to 5:3:11 without any oxygen deficiency. The microstructure of better films consisted of closed packed hexagonal crystals of 200–300 μm in size. Ferroelectric transition was sharp with Curie point 170–180°C, ε20=30–40, tgδ20≅0.02, εmax≅200, Ps=3.2 μC/cm2, Ec=16 kV/cm, ρ=108–109 Ωcm. All these parameters (with the exception of εmax) were in a good agreement with bulk single crystals ones.