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球磨法制备的反赫斯勒MnFeSi合金粉末的结构与磁性能

Structural and Magnetic Properties of Inverse-Heusler MnFeSi Alloy Powder Prepared by Ball Milling.

作者信息

Životský Ondřej, Skotnicová Kateřina, Čegan Tomáš, Juřica Jan, Gembalová Lucie, Zažímal František, Szurman Ivo

机构信息

Department of Physics, Faculty of Electrical Engineering and Computer Science, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Czech Republic.

Regional Materials Science and Technology Centre, Faculty of Materials Science and Technology, VŠB-Technical University of Ostrava, 17. listopadu 2172/15, 708 00 Ostrava, Czech Republic.

出版信息

Materials (Basel). 2022 Jan 18;15(3):697. doi: 10.3390/ma15030697.

DOI:10.3390/ma15030697
PMID:35160643
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8837106/
Abstract

Ternary MnFeSi alloy was synthesized from pure elemental powders by mechanical alloying, using a high-energy planetary ball mill. The formation of an inverse-Heusler phase after 168 h of milling and subsequent annealing at 1173 K for 1.5 h was confirmed by X-ray diffraction. The diffractogram analysis yielded XA structure and the lattice parameter 0.5677 nm in a good agreement with the theoretically obtained value of 0.560 nm. The final powder was formed by particles of irregular shape and median diameter D50 of 3.8 μm and their agglomerates. The chemical analysis resulted in the mean composition of 49.0 at.% Mn, 25.6 at.% Fe and 25.4 at.% Si. At room temperature, the prepared samples featured a heterogeneous magnetic structure consisting of dominant paramagnetic phase confirmed by Mössbauer spectrometry and a weak ferro-/ferrimagnetic contribution detected by magnetization curves. From the field-cooled and zero-field-cooled curves the Néel temperature of 67 K was determined.

摘要

采用高能行星球磨机，通过机械合金化法由纯元素粉末合成了三元MnFeSi合金。通过X射线衍射确认了球磨168小时并随后在1173 K下退火1.5小时后反赫斯勒相的形成。衍射图分析得出XA结构，晶格参数为0.5677 nm，与理论值0.560 nm吻合良好。最终粉末由不规则形状的颗粒和中值直径D50为3.8μm的颗粒及其团聚体组成。化学分析得出平均组成为49.0原子%的Mn、25.6原子%的Fe和25.4原子%的Si。在室温下，制备的样品具有非均匀磁结构，由穆斯堡尔谱确定的占主导地位的顺磁相和由磁化曲线检测到的微弱铁磁/亚铁磁贡献组成。从场冷曲线和零场冷曲线确定了奈尔温度为67 K。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/391f/8837106/efe8dbdf8d3f/materials-15-00697-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/391f/8837106/76fc70dba6d4/materials-15-00697-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/391f/8837106/efe8dbdf8d3f/materials-15-00697-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/391f/8837106/76fc70dba6d4/materials-15-00697-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/391f/8837106/efe8dbdf8d3f/materials-15-00697-g004.jpg

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