MnSi is a paramagneticmetal that turns into a ferromagnet at cryogenic temperatures below 29 K. In the ferromagnetic state, the spatial arrangement of electron spins in MnSi changes with magnetic field, forming helical, conical, skyrmion, and regular ferromagnetic phases.
Crystal structure and magnetismedit
Magnetic phase diagram of MnSi. At low temperatures, with increasing magnetic field, spins in MnSi form helical, conical, skyrmion (SkS) and regular ferromagnetic spatial structures. At high temperatures the spin orientation is random (paramagnetic)Simulated and measured (by STXM) images of helical, skyrmion and conical phases in FeGe. All magnetic properties are very similar in FeGe and MnSi, except for Tc values.
Manganese monosilicide is a non-stoichiometric compound, meaning that the 1:1 Mn:Si composition, lattice constant and many other properties vary depending on the synthesis and processing history of the crystal.[3]
MnSi has a cubic crystal lattice with no inversion center; therefore its crystal structure is helical, with right-hand and left-hand chiralities. At low temperatures and magnetic fields, the magnetic structure of MnSi can be described as a stack of ferromagnetically ordered layers lying parallel to the (111) crystallographic planes. The direction of magnetic moment varies from layer to layer by a small angle due to the antisymmetric exchange.[3]
Upon cooling to temperatures below Tc = 29 K, MnSi changes from a paramagnetic into a ferromagnetic state; the transition temperature Tc decreases with increasing pressure, vanishing at 1.4 GPa.[3]
Electron spins in MnSi show dissimilar, yet regular spatial arrangements at different values of applied magnetic field. Those arrangements are named helical, skyrmion, conical, and regular ferromagnetic. They can be controlled not only by temperature and magnetic field, but also by electric current, and the current density required for manipulating skyrmions (~106 A/m2) is approximately one million times smaller than that needed for moving magnetic domains in traditional ferromagnets. As a result, skyrmions in MnSi have potential application in ultrahigh-density magnetic storage devices.[4]
Wikimedia Commons has media related to Manganese silicide.
^Shinoda, Daizaburo; Asanabe, Sizuo (1966). "Magnetic Properties of Silicides of Iron Group Transition Elements". Journal of the Physical Society of Japan. 21 (3): 555. Bibcode:1966JPSJ...21..555S. doi:10.1143/JPSJ.21.555.
^ abLevinson, Lionel M. (1973). "Investigation of the defect manganese silicide MnnSi2n−m". Journal of Solid State Chemistry. 6 (1): 126–135. Bibcode:1973JSSCh...6..126L. doi:10.1016/0022-4596(73)90212-0.
^ abcdeStishov, Sergei M.; Petrova, Alla E. (2011). "Itinerant helimagnetic compound MnSi". Uspekhi Fizicheskikh Nauk. 181 (11): 1157. doi:10.3367/UFNr.0181.201111b.1157.
^Nagaosa, Naoto; Tokura, Yoshinori (2013). "Topological properties and dynamics of magnetic skyrmions". Nature Nanotechnology. 8 (12): 899–911. Bibcode:2013NatNa...8..899N. doi:10.1038/nnano.2013.243. PMID 24302027.
May 02, 2024
manganese, monosilicide, mnsi, intermetallic, compound, silicide, manganese, occurs, cosmic, dust, mineral, brownleeite, mnsi, cubic, crystal, lattice, with, inversion, center, therefore, crystal, structure, helical, with, right, hand, left, hand, chiralities,. Manganese monosilicide MnSi is an intermetallic compound a silicide of manganese It occurs in cosmic dust as the mineral brownleeite MnSi has a cubic crystal lattice with no inversion center therefore its crystal structure is helical with right hand and left hand chiralities Manganese monosilicide MnSi prepared by zone melting Structures of left handed and right handed MnSi crystals 3 presentations with different numbers of atoms per unit cell Names IUPAC name Manganese silicide Identifiers CAS Number 12626 89 0 N 3D model JSmol Interactive image PubChem CID 49854137 InChI InChI 1S Mn SiKey PYLLWONICXJARP UHFFFAOYSA N SMILES Si Mn Properties Chemical formula MnSi Molar mass 83 023 g mol Melting point 1 280 C 2 340 F 1 550 K 2 Magnetic susceptibility x 31 3 10 6 emu g 1 Thermal conductivity 0 1 W cm K 2 Structure Crystal structure Cubic 3 Space group P213 No 198 cP8 Lattice constant a 0 45598 2 nm Formula units Z 4 Hazards Flash point Non flammable Related compounds Other anions Manganese germanide Other cations Iron silicideCobalt silicide Related compounds Manganese disilicide Except where otherwise noted data are given for materials in their standard state at 25 C 77 F 100 kPa N what is Y N Infobox references MnSi is a paramagnetic metal that turns into a ferromagnet at cryogenic temperatures below 29 K In the ferromagnetic state the spatial arrangement of electron spins in MnSi changes with magnetic field forming helical conical skyrmion and regular ferromagnetic phases Crystal structure and magnetism edit nbsp Magnetic phase diagram of MnSi At low temperatures with increasing magnetic field spins in MnSi form helical conical skyrmion SkS and regular ferromagnetic spatial structures At high temperatures the spin orientation is random paramagnetic nbsp Simulated and measured by STXM images of helical skyrmion and conical phases in FeGe All magnetic properties are very similar in FeGe and MnSi except for Tc values Manganese monosilicide is a non stoichiometric compound meaning that the 1 1 Mn Si composition lattice constant and many other properties vary depending on the synthesis and processing history of the crystal 3 MnSi has a cubic crystal lattice with no inversion center therefore its crystal structure is helical with right hand and left hand chiralities At low temperatures and magnetic fields the magnetic structure of MnSi can be described as a stack of ferromagnetically ordered layers lying parallel to the 111 crystallographic planes The direction of magnetic moment varies from layer to layer by a small angle due to the antisymmetric exchange 3 Upon cooling to temperatures below Tc 29 K MnSi changes from a paramagnetic into a ferromagnetic state the transition temperature Tc decreases with increasing pressure vanishing at 1 4 GPa 3 Electron spins in MnSi show dissimilar yet regular spatial arrangements at different values of applied magnetic field Those arrangements are named helical skyrmion conical and regular ferromagnetic They can be controlled not only by temperature and magnetic field but also by electric current and the current density required for manipulating skyrmions 106 A m2 is approximately one million times smaller than that needed for moving magnetic domains in traditional ferromagnets As a result skyrmions in MnSi have potential application in ultrahigh density magnetic storage devices 4 Synthesis editCentimeter scale single crystals of MnSi can be prepared by direct crystallization from the melt using the Bridgman zone melting or Czochralski methods 3 References edit nbsp Wikimedia Commons has media related to Manganese silicide Shinoda Daizaburo Asanabe Sizuo 1966 Magnetic Properties of Silicides of Iron Group Transition Elements Journal of the Physical Society of Japan 21 3 555 Bibcode 1966JPSJ 21 555S doi 10 1143 JPSJ 21 555 a b Levinson Lionel M 1973 Investigation of the defect manganese silicide MnnSi2n m Journal of Solid State Chemistry 6 1 126 135 Bibcode 1973JSSCh 6 126L doi 10 1016 0022 4596 73 90212 0 a b c d e Stishov Sergei M Petrova Alla E 2011 Itinerant helimagnetic compound MnSi Uspekhi Fizicheskikh Nauk 181 11 1157 doi 10 3367 UFNr 0181 201111b 1157 Nagaosa Naoto Tokura Yoshinori 2013 Topological properties and dynamics of magnetic skyrmions Nature Nanotechnology 8 12 899 911 Bibcode 2013NatNa 8 899N doi 10 1038 nnano 2013 243 PMID 24302027 Retrieved from https en wikipedia org w index php title Manganese monosilicide amp oldid 1192104108, wikipedia, wiki, book, books, library,
