Impact of Mn-Pn intermixing on magnetic properties of an intrinsic magnetic topological insulator: The μsR perspective
Research output: Contribution to journal › Conference article › Contributed › peer-review
Contributors
Abstract
We investigated the magnetic properties of polycrystalline samples of the intrinsic magnetic topological insulators MnPn2Te4, with pnictogen Pn = Sb, Bi, by bulk magnetization and μSR. DC susceptibility detects the onset of magnetic ordering at TN = 27 K and 24 K and a field dependence of the macroscopic magnetization compatible with ferri- (or ferro-) and atiferro- magnetic ordering, respectively. Weak transverse field (wTF) Muon Spin Rotation (μSR) confirms the homogeneous bulk nature of magnetic ordering at the same two distinct transition temperatures. Zero Field (ZF) μSR shows that the Sb based material displays a broader distribution of internal field at the muon, in accordance with a larger deviation from the stoichiomectric composition and a higher degree of positional disorder (Mn at the Pn(6c) site), which however does not affect significantly the sharpness of the thermodynamic transition, as detected by the muon magnetic volume fraction and the observability of a critical divergence in the longitudinal and transverse muon relaxation rates.
Details
Original language | English |
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Article number | 012040 |
Journal | Journal of Physics: Conference Series |
Volume | 2462 |
Issue number | 1 |
Publication status | Published - 2023 |
Peer-reviewed | Yes |
Conference
Title | 15th International Conference on Muon Spin Rotation, Relaxation and Resonance, MuSR 2022 |
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Duration | 28 August - 2 September 2022 |
City | Parma |
Country | Italy |