Structure and magnetic properties of Fe1.14Cr1.86Se4 ferrimagnet: Negative magnetization and its dependence on magnetic field

• Published in: Journal of magnetism and magnetic materials Vol. 324; no. 7; pp. 1419 - 1424
• Main Authors: Svitlyk, Volodymyr, Russell, Tyler, Kolodiazhnyi, Taras, Mozharivskyj, Yurij
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01-04-2012; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Crystal structure; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Ferrimagnet; Halides, chalcogenides and analogous compounds of group vb; Inorganic compounds; Iron chromium selenide; Magnetic properties and materials; Magnetization curves, magnetization reversal, hysteresis, barkhausen and related effects; Magnetization reversal; Negative magnetization; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Negative magnetization; Magnetization reversal; Iron chromium selenide; Ferrimagnet; Crystal structure; Magnetization; Iron Chromium Selenides Mixed; Magnetic field effects; Ferrimagnetic materials; Monocrystals; Chemical vapor transport; Temperature effects; Sublattices; Compensation point
• ISSN: 0304-8853
• DOI: 10.1016/j.jmmm.2011.11.063

Small single crystals of the Fe1.14(7)Cr1.86(8)Se4.0(2) ferrimagnet were grown using chemical vapor transport. Fe1.14Cr1.86Se4 adopts the Cr3S4 structure with two metal sites. The magnetic behavior of Fe1.14Cr1.86Se4 can be described by two magnetic sublattices with different magnetization values and different temperature dependencies. Depending on the experimental conditions, such as the strength and direction of the cooling field, magnetization reversal, large negative magnetization and high-temperature compensation point may result. If the cooling field exceeds 1.5Oe, magnetization reversal occurs at low temperatures. If the cooling and applied fields are opposite, a large negative magnetization and high-temperature compensation point are observed.
► Origin of large negative magnetization the Fe1.14Cr1.86Se4 has been demonstrated. ► High-temperature magnetization reversal is explained. ► Magnetization reversal in Fe1.14Cr1.86Se4 depends on the strength of cooling field. ► Single crystals of Fe1.14Cr1.86Se4 were grown using vapor transport technique