Abstract

An investigation of new superprotonic crystals—namely, acid salts of potassium–ammonium sulfate (K_{1 – x}(NH₄)_x)₃H(SO₄)₂, x ≥ 0.57—is carried out. The surface morphology, domain structure, and conductivity of the samples are studied using atomic force microscopy. The stability and degradation of the surface of superprotonic crystals is first studied at the nanoscale. The data of piezoelectric response microscopy make it possible to establish that the crystal of (K_0.43(NH₄)_0.57)₃H(SO₄)₂ transits from the paraelectric phase to the ferroelectric phase when the temperature is decreased from 296 K to 282 K.

中文翻译：

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原子力显微镜在超质子晶体研究中的应用

摘要

的新superprotonic调查晶体-即，硫酸钾铵的酸式盐（K _{1 - X}（NH ₄）_X）₃ H（SO ₄）₂，X ≥0.57下进行。使用原子力显微镜研究了样品的表面形态，畴结构和电导率。首先在纳米尺度上研究了超质子晶体表面的稳定性和降解。压电响应显微镜的数据可以确定（K _0.43（NH ₄）_0.57）₃ H（SO ₄）₂的晶体 当温度从296 K降低到282 K时，从顺电相转变为铁电相。