Phase diagram and magnetic relaxation phenomena in Cu2OSeO3

F. Qian; H. Wilhelm; A. Aqeel; T.T.M. Palstra; A.J.E. Lefering; E.H. Bruck; C. Pappas

doi:10.1103/PhysRevB.94.064418

Phase diagram and magnetic relaxation phenomena in Cu₂OSeO₃

F. Qian, H. Wilhelm, A. Aqeel, T.T.M. Palstra, A.J.E. Lefering, E.H. Bruck, C. Pappas

Research output: Contribution to journal › Article › Academic › peer-review

47 Citations (Scopus)

Abstract

We present an investigation of the magnetic-field-temperature phase diagram of Cu₂OSeO₃ based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of T-c = 58.2 K and around the skyrmion lattice A phase. At the borders between the different phases the characteristic relaxation times reach several milliseconds and the relaxation is nonexponential. Consequently the borders between the different phases depend on the specific criteria and frequency used and an unambiguous determination is not possible.

Original language	English
Article number	064418
Journal	Physical review B: Covering condensed matter and materials physics
Volume	94
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevB.94.064418
Publication status	Published - 15 Aug 2016
Externally published	Yes

Keywords

Real-space observation
Skyrmion lattice
Weak ferromagnetism
Spin-glasses
Crystals
Dynamics
n/a OA procedure

Access to Document

10.1103/PhysRevB.94.064418

Cite this

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title = "Phase diagram and magnetic relaxation phenomena in Cu2OSeO3",

abstract = "We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of T-c = 58.2 K and around the skyrmion lattice A phase. At the borders between the different phases the characteristic relaxation times reach several milliseconds and the relaxation is nonexponential. Consequently the borders between the different phases depend on the specific criteria and frequency used and an unambiguous determination is not possible.",

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AU - Qian, F.

AU - Wilhelm, H.

AU - Aqeel, A.

AU - Palstra, T.T.M.

AU - Lefering, A.J.E.

AU - Bruck, E.H.

AU - Pappas, C.

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PY - 2016/8/15

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N2 - We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of T-c = 58.2 K and around the skyrmion lattice A phase. At the borders between the different phases the characteristic relaxation times reach several milliseconds and the relaxation is nonexponential. Consequently the borders between the different phases depend on the specific criteria and frequency used and an unambiguous determination is not possible.

AB - We present an investigation of the magnetic-field-temperature phase diagram of Cu2OSeO3 based on dc magnetization and ac susceptibility measurements covering a broad frequency range of four orders of magnitude, from very low frequencies reaching 0.1 Hz up to 1 kHz. The experiments were performed in the vicinity of T-c = 58.2 K and around the skyrmion lattice A phase. At the borders between the different phases the characteristic relaxation times reach several milliseconds and the relaxation is nonexponential. Consequently the borders between the different phases depend on the specific criteria and frequency used and an unambiguous determination is not possible.

KW - Real-space observation

KW - Skyrmion lattice

KW - Weak ferromagnetism

KW - Spin-glasses

KW - Crystals

KW - Dynamics

KW - n/a OA procedure

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DO - 10.1103/PhysRevB.94.064418

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SN - 0163-1829

VL - 94

JO - Physical review B: Covering condensed matter and materials physics

JF - Physical review B: Covering condensed matter and materials physics

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