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首页> 外文期刊>Materials Science and Engineering >Structural parameters and cation distributions in solid state synthesized Ni-Zn ferrites
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Structural parameters and cation distributions in solid state synthesized Ni-Zn ferrites

机译：固态合成镍锌铁氧体的结构参数和阳离子分布

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摘要

A series of Nickel-Zinc ferrite samples were synthesized by low-energy ball milling with subsequent thermal treatment in air at 1200 degrees C for 12 h. X-ray Diffraction patterns confirm the formation of the ferrite phases. Lattice parameters were found to increase almost linearly from 8.3366 angstrom to 8.4387 angstrom with the increment of zinc substitution. The oxygen parameters also increased and were found to closely follow an earlier proposed power law equation. The cation-oxygen bond lengths, suggest a gradual tetrahedral expansion and octahedral contraction with increasing Zn content. Additionally, the occupation of Zn2+ and Ni2+ ions in all samples has been determined by using the line intensity ratios of diffraction peaks together with a proposed general chemical formula. From the calculated cation distributions, it was found that the theoretical lattice parameters agree with the experimental ones. By using, the Williamson-Hall method, an average crystallite size of similar to 36 nm was found.
机译：通过低能球磨并随后在1200℃的空气中热处理12小时，合成了一系列镍锌铁氧体样品。 X射线衍射图证实了铁素体相的形成。发现晶格参数随着锌取代的增加从8.3366埃几乎线性地增加到8.4387埃。氧气参数也增加了，并且被发现与先前提出的幂律方程密切相关。阳离子-氧键的长度表明随着锌含量的增加，四面体逐渐膨胀和八面体收缩。此外，已经通过使用衍射峰的线强度比和建议的通用化学公式确定了所有样品中Zn2 +和Ni2 +离子的占有率。从计算出的阳离子分布，发现理论晶格参数与实验参数吻合。通过使用Williamson-Hall方法，发现平均晶粒尺寸类似于36 nm。

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