Manganese Deficiency in MnSi Single Crystal and Skyrmion Pinning

Author

Ou-Yang, T.Y. ; Shu, G.J. ; Hu, C.D. ; Chou, F.C.

Author_Institution

Dept. of Phys., Nat. Taiwan Univ., Taipei, Taiwan

Volume

50

Issue

11

fYear

2014

fDate

Nov. 2014

Firstpage

1

Lastpage

4

Abstract

The dc magnetization and ac spin susceptibility measurement results of MnxSi single crystals with x ≈ 0.96-1 are reported. Magnetic phase diagrams for Mn_xSi of different Mn deficiency levels are mapped and compared. We provide strong evidence that the existence of manganese deficiency is common in the MnSi single crystals due to the high Mn vapor loss during growth, and the Mn deficiencies could be used as pinning centers to stabilize the Skyrmion phase within the magnetic field-temperature phase space.

Keywords

crystal growth from solution; ferromagnetic-paramagnetic transitions; magnetic susceptibility; magnetisation; manganese alloys; silicon alloys; skyrmions; Mn deficiency; Mn_xSi; MnSi single crystal; ac spin susceptibility; dc magnetization; magnetic field-temperature phase space; magnetic phase diagram; manganese deficiency; pinning center; skyrmion phase; skyrmion pinning; Crystals; Lattices; Magnetic susceptibility; Manganese; Perpendicular magnetic anisotropy; Silicon; Defect; Dzyaloshinsky???Moriya (DM) interaction; Skyrmion; itinerant ferromagnetism;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2322603

Filename

6971548