Metamagnetic phase transition induced large magnetocaloric effect in a Dy0.5Ho0.5MnO3 single crystal

Yang, Wanting; Chen, Haiyang; Peng, Haohuan; Lin, Zhaodi; Zheng, Yubing; Ma, Xiaoxuan; Jia, Rongrong; Kang, Baojuan; Feng, Zhenjie; Cao, Shixun

doi:10.1039/d4cp02000f

Phys. Chem. Chem. Phys.

2024

DOI: 10.1039/d4cp02000f

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Metamagnetic phase transition induced large magnetocaloric effect in a Dy_0.5Ho_0.5MnO₃ single crystal

Wanting Yang,

Haiyang Chen,

Haohuan Peng

et al.

Abstract: A Dy0.5Ho0.5MnO3 single crystal exhibits a large (rotating) magnetocaloric effect because of both the ΔS-effect and ΔT-effect.

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Imaging of electric-field-induced domain structure in DyMnO$$_{3}$$ nanocrystals

Najeeb,

Morrison,

Mokhtar

et al. 2024

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Multiferroic materials that exhibit interacting and coexisting properties, like ferroelectricity and ferromagnetism, possess significant potential in the development of novel technologies that can be controlled through the application of external fields. They also exhibit varying regions of polarity, known as domains, with the interfaces that separate the domains referred to as domain walls. In this study, using three-dimensional (3D) bragg coherent diffractive imaging (BCDI), we investigate the dynamics of multiferroic domain walls in a single hexagonal dysprosium manganite (h-DyMnO$$_3$$ 3 ) nanocrystal under varying applied electric field. Our analysis reveals that domain wall motion is influenced by the pinning effects, and a threshold voltage of +3 V is required to overcome them. Using circular mean analysis and phase gradient mapping, we identified localised phase realignment and high-gradient regions corresponding to domain walls, providing insights into the behaviour of multiferroic systems under external stimuli.

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Imaging of electric-field-induced domain structure in DyMnO$$_{3}$$ nanocrystals

Najeeb,

Morrison,

Mokhtar

et al. 2024

Discover Nano

View full text Add to dashboard Cite

show abstract

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Metamagnetic phase transition induced large magnetocaloric effect in a Dy_0.5Ho_0.5MnO₃ single crystal

Abstract: A Dy0.5Ho0.5MnO3 single crystal exhibits a large (rotating) magnetocaloric effect because of both the ΔS-effect and ΔT-effect.

Cited by 1 publication

References 45 publications

Imaging of electric-field-induced domain structure in DyMnO$$_{3}$$ nanocrystals

Imaging of electric-field-induced domain structure in DyMnO$$_{3}$$ nanocrystals

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