Abstract

Samples of a homogeneous (x = 0, 0.1, and 0.2) and multilayer ceramics with a gradient composition (x = 0.2 → 0.1 → 0 → 0.1 → 0.2) based on solid solutions of (Ni_1 − xZn_x)Fe₂O₄ nickel–zinc ferrites have been manufactured using the thick-film technology. After sintering in a two-step mode, the gradient samples exhibited a smooth non-uniform distribution of chemical elements (Zn, Ni) over the thickness. The longitudinal (α_E33) and transverse (α_E31) magnetoelectric effects in two-layer PZT–nickel ferrite composites have been studied. In the absence of an external magnetostatic field, the values of magnetoelectric coefficients were negligible. The maximum value of the longitudinal magnetoelectric coefficient for composites with the gradient magnetic phase was practically two times higher than value of α_E33 for homogeneous structures.

中文翻译：

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具有梯度磁性相的两层复合材料的磁电效应

摘要

基于（Ni _{1 − x} Zn _x）Fe ₂ O固溶体的具有梯度成分（x = 0.2→0.1→0→0.1→0.2）的均质（x = 0、0.1和0.2）和多层陶瓷样品使用厚膜技术已经制造了_4种镍锌铁氧体。在两步模式下烧结后，梯度样品在厚度方向上显示出化学元素（Zn，Ni）的平滑非均匀分布。纵向（α _{Ë 33}）和横向（α _{Ë 31} ）已经研究了两层PZT-镍铁氧体复合材料的磁电效应。在没有外部静磁场的情况下，磁电系数的值可以忽略不计。纵向磁电系数的用于与所述梯度磁性相的复合材料的最大值为高几乎两倍比α的值_{ê 33}为均匀的结构。