TY - JOUR
T1 - Comparative study of the magnetism in Mn3RhGe and related compound Mn3IrSi
AU - Hall, Amelia E.
AU - Manuel, Pascal
AU - Khalyavin, Dmitry D.
AU - Orlandi, Fabio
AU - Mayoh, Daniel A.
AU - Chang, Lieh Jeng
AU - Chen, Yu Sheng
AU - Jonas, David G.C.
AU - Lees, Martin R.
AU - Balakrishnan, Geetha
N1 - Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
PY - 2023/11
Y1 - 2023/11
N2 - The Mn3XY (X = Co, Rh, Ir and Y = Si, Ge) family of materials adopts an ordered form of the chiral β-Mn structure lacking inversion symmetry. Polycrystalline samples of Mn3IrSi and a new member in this family, Mn3RhGe, have been synthesized and investigated with heat capacity, magnetic susceptibility, and neutron powder diffraction measurements. Mn3RhGe and Mn3IrSi exhibit long-range magnetic order below 225(2) and 230(2) K, respectively. The neutron diffraction data reveal a high-temperature incommensurate magnetic structure in Mn3RhGe, which transitions into a noncollinear commensurate antiferromagnetic ground state upon cooling via a phase coexistence in a wide temperature range. The presence of the incommensurate magnetic order reveals a significant role of exchange interactions beyond nearest and next-nearest neighbors. Mn3IrSi shares the noncollinear commensurate magnetic structure for all temperatures and shows no evidence of incommensurate magnetism.
AB - The Mn3XY (X = Co, Rh, Ir and Y = Si, Ge) family of materials adopts an ordered form of the chiral β-Mn structure lacking inversion symmetry. Polycrystalline samples of Mn3IrSi and a new member in this family, Mn3RhGe, have been synthesized and investigated with heat capacity, magnetic susceptibility, and neutron powder diffraction measurements. Mn3RhGe and Mn3IrSi exhibit long-range magnetic order below 225(2) and 230(2) K, respectively. The neutron diffraction data reveal a high-temperature incommensurate magnetic structure in Mn3RhGe, which transitions into a noncollinear commensurate antiferromagnetic ground state upon cooling via a phase coexistence in a wide temperature range. The presence of the incommensurate magnetic order reveals a significant role of exchange interactions beyond nearest and next-nearest neighbors. Mn3IrSi shares the noncollinear commensurate magnetic structure for all temperatures and shows no evidence of incommensurate magnetism.
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U2 - 10.1103/PhysRevMaterials.7.114402
DO - 10.1103/PhysRevMaterials.7.114402
M3 - Article
AN - SCOPUS:85177614492
SN - 2475-9953
VL - 7
JO - Physical Review Materials
JF - Physical Review Materials
IS - 11
M1 - 114402
ER -