کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1515176 | 994538 | 2015 | 7 صفحه PDF | دانلود رایگان |
Millimeter-sized FeB4 bulks were synthesized under high pressure of 15 GPa and 1600 °C. Multiple analysis methodologies including XRD, SEM, TEM, and Raman spectroscopy verified this new phase with an oP10 crystal structure. A relatively low hardness of 15.4 GPa, which is consistent with hardness estimated from both macroscopic and microscopic hardness models, excludes FeB4 as a superhard material. Magnetization and resistance measurements do not indicate superconductivity in FeB4 for temperature as low as 2.5 K. Previously reported superconductivity in FeB4 needs a further investigation, especially for structural imperfections, unidentified phases, and/or contaminations.
New microhardness measurements on millimeter-sized FeB4 sample show a low hardness of 15.4 GPa, which excludes FeB4 as a superhard material.Figure optionsDownload as PowerPoint slide
Journal: Journal of Materiomics - Volume 1, Issue 1, March 2015, Pages 45–51