铁注入LiNbO3中Fe-Nb合金析出物的特殊成分

IF 2.5 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-05-06 DOI:10.3390/magnetochemistry9050121

A. Zinnatullin, Andrei V. Petrov, R. Yusupov, Valerii F. Valeev, R. Khaibullin, F. Vagizov

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引用次数: 0

摘要

首次报道了用铁离子重注入LiNbO3晶体的研究结果。用40keV的Fe+离子注入X射线切割的LiNbO3衬底，注入通量为1.5·1017个离子/cm2。样品在室温下显示出明显的铁磁性。然而，在相同条件下，在铁注入的LiNbO3中观察到的铁磁响应不同于用铁离子注入的其他氧化物的磁行为。这种差异产生于LiNbO3的注入表面层的不寻常的磁相组成，其中铁注入以金属铁与铌的纳米级合金的形式沉淀。根据穆斯堡尔谱数据，我们估计离子合成的纳米合金中Nb的含量约为12at.%，远高于Nb在大块Fe中的固溶极限。

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Unusual Compositions of Fe-Nb Alloy Precipitates in Iron-Implanted LiNbO3

The results of a study of heavy implantation of a LiNbO3 crystal with iron ions are reported for the first time. The X-cut LiNbO3 substrate was implanted with 40-keV Fe+ ions to the fluence of 1.5·1017 ions/cm2. The sample reveals pronounced ferromagnetic properties at room temperature. However, the ferromagnetic response observed in the iron-implanted LiNbO3 differs from the magnetic behavior of other oxides implanted with iron ions under the same conditions. This difference occurs from the unusual magnetic phase composition of the implanted surface layer of the LiNbO3 in which the iron implant precipitates in the form of the nanoscale alloy of metallic iron with niobium. Based on Mössbauer spectroscopy data, we estimated the Nb content in the ion-synthesized nanosized alloy as ~12 at.%, which is much higher than the solid solubility limit of Nb in bulk Fe.

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来源期刊

Magnetochemistry Chemistry-Chemistry (miscellaneous)

CiteScore

3.90

自引率

11.10%

发文量

145

审稿时长

11 weeks

期刊介绍： Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.