基于岩石的人造玻璃的超顺磁性:实验数据和理论建模

IF 2.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-10-08 DOI:10.3390/magnetochemistry9100220

Petr Kharitonskii, Elena Sergienko, Andrey Ralin, Evgenii Setrov, Timur Sheidaev, Kamil Gareev, Alexander Ustinov, Nikita Zolotov, Svetlana Yanson, Danil Dubeshko

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引用次数: 0

摘要

采用岩石高温熔融法制备了含磁铁矿和赤铁矿等氧化铁纳米包体的人工玻璃。影响玻璃磁性能的主要因素是初始电荷的组成和熔体的冷却条件。磁粒度和磁化率的频场依赖性数据表明，样品中存在足够大的超顺磁部分。使用两个独立的模型进行协调理论建模，考虑到粒子的化学不均匀性和它们之间的静磁相互作用，从而可以计算出与实验相对应的磁滞特性，并估计样品中的铁磁浓度，包括超顺磁分数。

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Superparamagnetism of Artificial Glasses Based on Rocks: Experimental Data and Theoretical Modeling

Artificial glasses containing nanoscale inclusions of iron oxides, including magnetite and hematite, were obtained via the method of the high-temperature melting of rocks. The main factors influencing the magnetic properties of glasses are the composition of the initial charge and the conditions of cooling of the melt. The data of magnetic granulometry and frequency-field dependencies of magnetic susceptibility showed the presence of a sufficiently large superparamagnetic fraction in the samples. Coordinated theoretical modeling using two independent models that take into consideration possible the chemical inhomogeneity of particles and magnetostatic interaction between them made it possible to calculate hysteresis characteristics corresponding to the experiment and to estimate ferrimagnetic concentrations in the samples, including the superparamagnetic fraction.

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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.