This content will become publicly available on October 14, 2020
Effect of Ge substitution on magnetic properties in the itinerant chiral magnet MnSi
Abstract
We have investigated the effect of Ge substitution on the magnetic ordering in the B20 itinerant chiral magnet MnSi prepared by melting and annealing under ambient pressure. From a metallurgical survey, the solubility limit of Ge was found to be x = 0.144(5) with annealing temperature T an = 1073 K. Magnetization measurements on MnSi 1–xGe x samples show that the helical ordering temperature T c increases rapidly in the low-x range, whereas it becomes saturated at higher concentration x > 0.1. Here, the Ge substitution also increases both the saturation magnetization M s and the critical field to the fully polarized state H c2. In contrast to the saturation behavior of T c, those parameters increase linearly up to the highest Ge concentration investigated. In the temperature-magnetic field phase diagram, we found enlargement of the skyrmion phase region for large x samples. We, furthermore, observed the nonlinear behavior of helical modulation vector k as a function of Ge concentration, which can be described qualitatively using the mean field approximation.
- Authors:
- Tohoku Univ., Sendai (Japan)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1570897
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Materials
- Additional Journal Information:
- Journal Volume: 3; Journal Issue: 10; Journal ID: ISSN 2475-9953
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Aji, Seno, Ishida, Hidesato, Okuyama, Daisuke, Nawa, Kazuhiro, Hong, Tao, and Sato, Taku J. Effect of Ge substitution on magnetic properties in the itinerant chiral magnet MnSi. United States: N. p., 2019.
Web. doi:10.1103/PhysRevMaterials.3.104408.
Aji, Seno, Ishida, Hidesato, Okuyama, Daisuke, Nawa, Kazuhiro, Hong, Tao, & Sato, Taku J. Effect of Ge substitution on magnetic properties in the itinerant chiral magnet MnSi. United States. doi:10.1103/PhysRevMaterials.3.104408.
Aji, Seno, Ishida, Hidesato, Okuyama, Daisuke, Nawa, Kazuhiro, Hong, Tao, and Sato, Taku J. Mon .
"Effect of Ge substitution on magnetic properties in the itinerant chiral magnet MnSi". United States. doi:10.1103/PhysRevMaterials.3.104408.
@article{osti_1570897,
title = {Effect of Ge substitution on magnetic properties in the itinerant chiral magnet MnSi},
author = {Aji, Seno and Ishida, Hidesato and Okuyama, Daisuke and Nawa, Kazuhiro and Hong, Tao and Sato, Taku J.},
abstractNote = {We have investigated the effect of Ge substitution on the magnetic ordering in the B20 itinerant chiral magnet MnSi prepared by melting and annealing under ambient pressure. From a metallurgical survey, the solubility limit of Ge was found to be x = 0.144(5) with annealing temperature Tan = 1073 K. Magnetization measurements on MnSi1–xGex samples show that the helical ordering temperature Tc increases rapidly in the low-x range, whereas it becomes saturated at higher concentration x > 0.1. Here, the Ge substitution also increases both the saturation magnetization Ms and the critical field to the fully polarized state Hc2. In contrast to the saturation behavior of Tc, those parameters increase linearly up to the highest Ge concentration investigated. In the temperature-magnetic field phase diagram, we found enlargement of the skyrmion phase region for large x samples. We, furthermore, observed the nonlinear behavior of helical modulation vector k as a function of Ge concentration, which can be described qualitatively using the mean field approximation.},
doi = {10.1103/PhysRevMaterials.3.104408},
journal = {Physical Review Materials},
number = 10,
volume = 3,
place = {United States},
year = {2019},
month = {10}
}
Works referenced in this record:
Magnetism and spin fluctuations in a weak itinerant ferromagnet: MnSi
journal, September 1995
- Thessieu, C.; Flouquet, J.; Lapertot, G.
- Solid State Communications, Vol. 95, Issue 10
Substitutional effect on the transport properties of MnSi
journal, September 2006
- Sivakumar, K. M.; Kuo, Y. K.; Lue, C. S.
- Journal of Magnetism and Magnetic Materials, Vol. 304, Issue 1
Magnetic structure of MnSi under an applied field probed by polarized small-angle neutron scattering
journal, December 2006
- Grigoriev, S. V.; Maleyev, S. V.; Okorokov, A. I.
- Physical Review B, Vol. 74, Issue 21
Implications of the B20 crystal structure for the magnetoelectronic structure of
journal, August 2004
- Jeong, T.; Pickett, W. E.
- Physical Review B, Vol. 70, Issue 7
Magnetic phase diagram of MnSi inferred from magnetization and ac susceptibility
journal, June 2012
- Bauer, A.; Pfleiderer, C.
- Physical Review B, Vol. 85, Issue 21
Frustrated magnetic helices in MnSi-type crystals
journal, January 2012
- Chizhikov, Viacheslav A.; Dmitrienko, Vladimir E.
- Physical Review B, Vol. 85, Issue 1
Spin waves in full-polarized state of Dzyaloshinskii-Moriya helimagnets: Small-angle neutron scattering study
journal, December 2015
- Grigoriev, S. V.; Sukhanov, A. S.; Altynbaev, E. V.
- Physical Review B, Vol. 92, Issue 22
Skyrmion Lattice in a Chiral Magnet
journal, February 2009
- Muhlbauer, S.; Binz, B.; Jonietz, F.
- Science, Vol. 323, Issue 5916
Quantum phase transitions in single-crystal and : Crystal growth, magnetization, ac susceptibility, and specific heat
journal, August 2010
- Bauer, A.; Neubauer, A.; Franz, C.
- Physical Review B, Vol. 82, Issue 6
Recent advances in magnetic structure determination by neutron powder diffraction
journal, October 1993
- Rodríguez-Carvajal, Juan
- Physica B: Condensed Matter, Vol. 192, Issue 1-2
Effect of negative chemical pressure on the prototypical itinerant magnet MnSi
journal, January 2017
- Dhital, C.; Khan, M. A.; Saghayezhian, M.
- Physical Review B, Vol. 95, Issue 2
Magnetic ordering in bulk MnSi crystals with chemically induced negative pressure
journal, August 2012
- Potapova, Nadya; Dyadkin, Vadim; Moskvin, Evgeniy
- Physical Review B, Vol. 86, Issue 6
Helical spin structure in manganese silicide MnSi
journal, July 1976
- Ishikawa, Y.; Tajima, K.; Bloch, D.
- Solid State Communications, Vol. 19, Issue 6
Topological transitions among skyrmion- and hedgehog-lattice states in cubic chiral magnets
journal, March 2019
- Fujishiro, Y.; Kanazawa, N.; Nakajima, T.
- Nature Communications, Vol. 10, Issue 1
Topological Hall Effect in the Phase of MnSi
journal, May 2009
- Neubauer, A.; Pfleiderer, C.; Binz, B.
- Physical Review Letters, Vol. 102, Issue 18
Cubic magnets with Dzyaloshinskii-Moriya interaction at low temperature
journal, May 2006
- Maleyev, S. V.
- Physical Review B, Vol. 73, Issue 17
Helical spin structure of under a magnetic field: Small angle neutron diffraction study
journal, April 2009
- Grigoriev, S. V.; Dyadkin, V. A.; Moskvin, E. V.
- Physical Review B, Vol. 79, Issue 14
Magnetic excitations in the weak itinerant ferromagnet MnSi
journal, December 1977
- Ishikawa, Y.; Shirane, G.; Tarvin, J. A.
- Physical Review B, Vol. 16, Issue 11
Structural and thermal properties of MnSi single crystal
journal, July 2010
- Tite, T.; Shu, G. J.; Chou, F. C.
- Applied Physics Letters, Vol. 97, Issue 3
Magnetic Properties of the Monosilicides of Some 3 d Transition Elements
journal, March 1966
- Williams, H. J.; Wernick, J. H.; Sherwood, R. C.
- Journal of Applied Physics, Vol. 37, Issue 3
Skyrmion lattice structural transition in MnSi
journal, June 2017
- Nakajima, Taro; Oike, Hiroshi; Kikkawa, Akiko
- Science Advances, Vol. 3, Issue 6
Exploring the origins of the Dzyaloshinskii-Moriya interaction in MnSi
journal, December 2017
- Dhital, C.; DeBeer-Schmitt, L.; Zhang, Q.
- Physical Review B, Vol. 96, Issue 21
Magnetic fluctuations and correlations in MnSi: Evidence for a chiral skyrmion spin liquid phase
journal, June 2011
- Pappas, C.; Lelièvre-Berna, E.; Bentley, P.
- Physical Review B, Vol. 83, Issue 22
Demagnetizing factors for rectangular ferromagnetic prisms
journal, March 1998
- Aharoni, Amikam
- Journal of Applied Physics, Vol. 83, Issue 6