Abstract

The relationship between the chemical composition, phase structure, grain size, electrical resistance, and Seebeck coefficient in composite ceramics (ZnO)_z[(TM)_xO_y]_1 – z (TM = Fe, Co (transition metals); 0 ≤ x ≤ 3, 1 ≤ y ≤ 4, 0.5 ≤ z ≤ 50 wt %), obtained using one- and two-stage technology has been examined. Experimental data on the electrical conductivity, Hall effect, and thermoelectric parameters of doped and undoped ceramics are presented. In the wurtzite phase of the studied ceramics, two levels were found: a shallow level with ionization energy ΔE₁ ≈ 0.04–0.05 eV and a deep level with ΔE₂ ≈ 0.24–0.37 eV. The relationship between the phase composition, electrical conductivity, and thermoelectric power in the studied ceramics has been established. Doping of zinc oxide with iron is shown to be promising for increasing the Seebeck effect.

中文翻译：

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掺杂铁和钴的氧化锌基陶瓷的电学和热电性能

摘要

复合陶瓷（ZnO）中化学成分、相结构、晶粒尺寸、电阻与塞贝克系数的关系_z [(TM) _x O _y ] _{1 –  z} (TM = Fe, Co (过渡金属); 0 ≤ x ≤ 3, 1 ≤ y ≤ 4, 0.5 ≤ z ≤ 50 wt %)，使用一阶段和两阶段技术获得。介绍了掺杂和未掺杂陶瓷的电导率、霍尔效应和热电参数的实验数据。在所研究陶瓷的纤锌矿相中，发现了两个能级：具有电离能 Δ E ₁ ≈ 0.04–0.05 eV 的浅能级和具有 Δ E的深能级₂ ≈ 0.24–0.37 eV。已经建立了所研究陶瓷的相组成、电导率和热电功率之间的关系。证明用铁掺杂氧化锌有望增加塞贝克效应。