Abstract The purpose of this particular study is the development of a high frequency –1 to 3 MHz – stable MnZn ferrite. The notion under which the study was held was the preliminary investigation of the dissipation mechanisms, and subsequently the hypothesis of the predominance of one. Accordingly the path of enhancement commenced with a selection of high frequency MnZn ferrite as the base – namely one exhibiting high ferromagnetic resonance (FMR) already – and the selective addition of Co2+ and Mg2+. Arguably the offspring of the study was a superb high frequency ferrite, stable throughout the temperature spectrum, 25–115 °C, presenting power losses as low as 87 mW cm−3 (1 MHz, 50 mT, 85 °C) and 319 mW cm−3 (3 MHz, 30 mT, 85 °C). Initial permeability (10 kHz, 0.1 mT) remains higher than the value of 850 (25–115 °C) and FMR appears no earlier than 7.1 MHz. To the authors’ knowledge these values are among the best reported.

中文翻译：

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用于 1-3 MHz 频率范围内应用的低损耗 MnZn 铁氧体

摘要 这项特殊研究的目的是开发高频 –1 至 3 MHz – 稳定的 MnZn 铁氧体。进行这项研究的概念是对耗散机制的初步调查，然后是一个占优势的假设。因此，增强路径开始于选择高频 MnZn 铁氧体作为基础——即已经表现出高铁磁共振 (FMR) 的铁氧体——以及选择性添加 Co2+ 和 Mg2+。可以说，这项研究的后代是一种极好的高频铁氧体，在整个温度范围内稳定，25–115 °C，功率损耗低至 87 mW cm−3（1 MHz，50 mT，85 °C）和 319 mW cm−3 (3 MHz, 30 mT, 85 °C)。初始磁导率 (10 kHz, 0. 1 mT) 仍然高于 850 (25–115 °C) 的值，并且 FMR 出现不早于 7.1 MHz。据作者所知，这些值是报告最好的值之一。