Abstract

Thermally stimulated depolarization currents (TSDC) of triglycine sulfate (TGS) single crystals, which are pure, \(\gamma\)-radiated and doped with Cr\({}^{3+}\) ions, have been studied. When thousandths of a weight percent of interstitial impurities (Cr, Cu, and Fe) are introduced into the lattice of TGS single crystals at the growth stage, the domain structure stabilizes (monodomainization) and the region of the polar phase expands (up to \(T_{\textrm{M}}\sim 110^{\circ}\)C), while the analogy of the dielectric response at the Curie point \(T_{\textrm{C}}\sim 49.7^{\circ}\)C is preserved. These effects are observed on the TSDC curves as a peak near \(T_{\textrm{C}}\) and additional diffuse anomalies near \(T_{\textrm{M}}\). Similar phenomena take place in TGS crystals irradiated with \(\gamma\)-rays in the presence of a polarizing constant electric field. These anomalies are probably due to changes in the energy of protons during their jump-like transitions to a higher energy level in the double-well potential of a hydrogen bond.

中文翻译：

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逐步加热下具有杂质和辐射缺陷的TGS晶体中的热激发去极化电流

摘要

研究了三甘氨酸硫酸盐（TGS）单晶的热激发去极化电流（TSDC），该晶体是纯的\（\γ\）辐射并掺杂有Cr \（{} ^ {3 +} \）离子。当在生长阶段将千分之几的重量百分比的间隙杂质（Cr，Cu和Fe）引入TGS单晶的晶格中时，畴结构稳定（单畴化），并且极性相的区域扩大（达到）。 （T _ {\ textrm {M}} \ sim 110 ^ {\ circ} \） C），而居里点\（T _ {\ textrm {C}} \ sim 49.7 ^ {\ circ } \） C被保留。这些影响在TSDC曲线上观察为\（T _ {\ textrm {C}} \）附近的峰值和附近的其他弥散异常\（T _ {\ textrm {M}} \）。在存在极化恒定电场的情况下，用\（\γ\）射线照射的TGS晶体也会发生类似现象。这些异常可能是由于质子的能量在氢键的双阱势能中跃迁到更高的能级时发生了变化。