Observation of structural anomaly and low-field magnetocaloric effect in Cu2OSeO3

Dutta, P.; Das, Mrinmoy; Banerjee, Aritra; Chatterjee, S.; Majumdar, S.

doi:10.1016/j.jallcom.2021.161198

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Cited by 4 publications

(1 citation statement)

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“…This indicates that the magnetic transition is associated with structural changes, although the crystal symmetry remains unchanged. The existence of significant structural defor-mation and thermal hysteresis indicates to the possible magneto-structural coupling that corroborates nicely to the magneto-crystalline anisotropy in the system [27,[50][51][52].…”

Section: Discussionmentioning

confidence: 53%

Magnetization, dielectric and thermal studies in the double perovskite polycrystalline compound Tm2CoMnO6

Banerjee¹,

Das²,

Rajaji³

et al. 2023

Preprint

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Section: Discussionmentioning

confidence: 53%

Magnetization, dielectric and thermal studies in the double perovskite polycrystalline compound Tm2CoMnO6

Banerjee¹,

Das²,

Rajaji³

et al. 2023

Preprint

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Electronic and structural aspects of the chiral helimagnetic compound Cu2OSeO3

Numan,

Das,

Dutta

et al. 2024

Journal of Physics and Chemistry of Solids

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Magnetostriction related to skyrmion-lattice formation in chiral magnet FeGe

Mito,

Tajiri,

Kousaka

et al. 2024

Journal of Applied Physics

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The B20 type chiral magnet FeGe exhibits the formation of skyrmion-lattice (SkL) phases in the vicinity of the magnetic ordering temperature. The SkL is a magnetic superlattice composed of vortex-type topological spin objects, and it has experimentally been known that its formation requires the existence of an intermediate (IM) phase between SkL and the paramagnetic (PM) phases. We take interest in how the crystal lattice experiences the formation of these topological spin texture. In this study, we observed the so-called spin–orbit coupling induced magnetostriction related to these topological spin texture formation, in addition to the ac magnetization anomalies. The temperature and magnetic field dependences of the lattice parameter reflected the transformation of phases, such as helimagnetic (HM), SkL, IM, conical (CM), and PM phases. In the PM region, a phase characterized as gaseous skyrmions was detected similarly to the case of the same B20 type MnSi. Furthermore, the HM, CM, and IM phases were also divided into two regions. Thus, the precise phase diagram near Tc was reconstructed from the prospect of the magnetostriction such that we demonstrated that the stabilization of skyrmions needs a finite magnetic field.

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Observation of structural anomaly and low-field magnetocaloric effect in Cu2OSeO3

Cited by 4 publications

References 30 publications

Magnetization, dielectric and thermal studies in the double perovskite polycrystalline compound Tm2CoMnO6

Magnetization, dielectric and thermal studies in the double perovskite polycrystalline compound Tm2CoMnO6

Electronic and structural aspects of the chiral helimagnetic compound Cu2OSeO3

Magnetostriction related to skyrmion-lattice formation in chiral magnet FeGe

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