Alexandrakis Vasileios, Wallisch Wolfgang, Hamann Sven, Varvaro Gaspare, Fidler Josef, Ludwig Alfred
Ruhr-University Bochum , Faculty of Mechanical Engineering, Institute for Materials, 44801 Bochum, Germany.
Institute of Solid State Physics, Vienna University of Technology , Wiedner Hauptstrasse 8-10, 1040 Vienna, Austria.
ACS Comb Sci. 2015 Nov 9;17(11):698-703. doi: 10.1021/acscombsci.5b00116. Epub 2015 Oct 3.
A Fe-Co-Nb thin film materials library was deposited by combinatorial magnetron sputtering and investigated by high-throughput methods to identify new noncubic ferromagnetic phases, indicating that combinatorial experimentation is an efficient method to discover new ferromagnetic phases adequate for permanent magnet applications. Structural analysis indicated the formation of a new magnetic ternary compound (Fe,Co)3Nb with a hexagonal crystal structure (C36) embedded in an FeCo-based matrix. This nanocomposite exhibits characteristics of a two-phase ferromagnetic system, the so-called hard-soft nanocomposites, indicating that the new phase (Fe,Co)3Nb is ferromagnetic. Magnetic hysteresis loops at various angles revealed that the magnetization reversal process is governed by a domain wall pinning mechanism.
通过组合磁控溅射沉积了一个铁-钴-铌薄膜材料库，并采用高通量方法进行研究，以识别新的非立方铁磁相，这表明组合实验是发现适用于永磁应用的新铁磁相的有效方法。结构分析表明，在铁钴基基体中形成了一种具有六方晶体结构（C36）的新型磁性三元化合物（Fe,Co）3Nb。这种纳米复合材料表现出两相铁磁系统的特性，即所谓的硬-软纳米复合材料，这表明新相（Fe,Co）3Nb是铁磁性的。不同角度下的磁滞回线表明，磁化反转过程受畴壁钉扎机制控制。
