Room-temperature magnetic Heusler compound Fe2Ti0.5Co0.5Si with semiconducting behavior

Autor:	Shah R. Valloppilly, David J. Sellmyer, Sy_Hwang Liou, Yunlong Jin, Yi Yang
Rok vydání:	2019
Předmět:	Residual resistivity Materials science Ferromagnetism Spintronics Condensed matter physics Electrical resistivity and conductivity engineering Curie temperature engineering.material Condensed Matter Physics Heusler compound Temperature coefficient Electronic Optical and Magnetic Materials
Zdroj:	Journal of Magnetism and Magnetic Materials. 474:343-346
ISSN:	0304-8853
Popis:	The structural, magnetic and electron-transport properties of Fe2Ti0.5Co0.5Si are investigated. It is demonstrated that rapidly quenched Fe2Ti0.5Co0.5Si ribbons crystallize in the L21 structure, indicating a full Heusler compound, and exhibit ferromagnetism with a high Curie temperature of about 790 K. Moreover, Fe2Ti0.5Co0.5Si exhibits semiconducting behavior with a negative temperature coefficient of resistivity, a room-temperature resistivity of about 6.5 mΩ cm and a residual resistivity ρ0 of about 6.75 mΩ cm. The carrier concentration n is 1.15 × 1020 cm−3 at 5 K. The magnetic semiconducting behavior with a high Curie temperature makes this material promising for room-temperature spintronic and magnetic applications.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6a3e4db5051487c1da325c1f913af3ea https://doi.org/10.1016/j.jmmm.2018.11.063 Zobrazit plný text záznamu Full Text from ScienceDirect