J. L. Lu

Xi'an Technological University

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Pengbo Wang

Changchun Institute of Applied Chemistry

Hongjun Xiang

State Key Laboratory of Surface Physics

Venkatraman Gopalan

Pennsylvania State University

Joachim Sauer

Humboldt-Universität zu Berlin

Yujia Wang

Liaoning Shihua University

Jing Guo

Tsinghua University

Shamil Shaikhutdinov

Fritz Haber Institute of the Max Planck Society

Hong‐Jun Gao

Institute of Physics

Pu Yu

Tsinghua University

Rolf Erni

Swiss Federal Laboratories for Materials Science and Technology

Cooperative Institutions

University of Science and Technology of China

Tsinghua University

Fudan University

Fritz Haber Institute of the Max Planck Society

Humboldt-Universität zu Berlin

Chinese Academy of Sciences

ETH Zurich

Lawrence Berkeley National Laboratory

Pennsylvania State University

John Wiley & Sons (United States)

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Strain-induced ferroelectricity and spin-lattice coupling in SrMnO3 thin films

Physical review. B./Physical review. B (2018)

Jing Guo Pengbo Wang Yakun Yuan Qing He J. L. Lu

Designing novel multiferroic materials with simultaneous ferroelectric and magnetic orders has been one of the focal points over the last decade due to the promising applications and rich physics involved. In this study, using epitaxial strain (up to 3.8%) as tuning knob, we successfully introduce multiferroicity with prominent high-temperature ferroelectricity into the paraelectric $\mathrm{SrMn}{\mathrm{O}}_{3}$. More interestingly, the experimental temperature-dependent ferroelectric and magnetic studies suggest that the emergent antiferromagnetic order below 100 K greatly enhances the ferroelectric polarization due to the spin-order-induced ionic displacements. We envision that the strain-mediated spin-phonon coupling can be utilized as a pathway to discover functionalities in a wide range of antiferromagnetic insulators with delicate epitaxial manipulations.

10.1103/physrevb.97.235135

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Citations (60)

Erratum: Atomic structure of a thin silica film on aMo(112)substrate: A combined experimental and theoretical study [Phys. Rev. B73, 165414 (2006)]

Physical Review B (2006)

Tanya K. Todorova Marek Sierka Joachim Sauer Sarp Kaya Jonas Weissenrieder

The atomic structure of the thin SiO2 film on a Mo(112) substrate has been determined based on a combination of density functional theory calculations and high-quality experimental data obtained from scanning tunneling microscopy, infrared reflection absorption spectroscopy, and x-ray photoelectron spectroscopy. The film consists of a honeycomblike, two-dimensional network of corner-sharing [SiO4] tetrahedra. One oxygen atom of each tetrahedron binds to the Mo(112) substrate and is located in a bridge position between Mo atoms located in rows protruding from the metal surface. The other three oxygen atoms form Si-O-Si bonds with the neighboring tetrahedra.

Tetrahedron

10.1103/physrevb.73.249902

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Study on Enhanced Magnetostriction in (x)PbZr_0.52Ti_0.48O₃-(1-x)NiFe₂O₄ Composites by Magnetoelectric Effect

Journal of Physics Conference Series (2023)

J. L. Lu Zhenhua Shi

Abstract Magnetoelectric composites (x)PbZr 0.52 Ti 0.48 O 3 (PZT)-(1-x)NiFe 2 O 4 (NFO) with x values of 0.15, 0.30, 0.45, 0.55, 0.75, and 0.85 mol% were obtained by traditional solid phase reaction. The measured magnetic and magnetostriction properties are strongly dependent upon the molar fraction (1-x) of the NFO in the composites. The maximum magnetostriction coefficient of -52.4 ppm was observed in 0.3PZT-0.7NFO composite ceramic. All the magnetostriction in the composites is larger than the reported values. The larger magnetostriction would result from the magnetoelectric (ME) effect of the composites. We propose a model of the magnetostriction within the composites consisting of strain and polarization. The relationship between the ME effect and magnetostriction is discussed in the qualitative features of this model. This magnetoelectric composite material maintains a strong magnetostrictive effect, which can be used in multifunctional sensors. It will provide new ideas for the design of multifunctional sensors in the future.

10.1088/1742-6596/2539/1/012088

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Realizing Magnetoelectric Coupling with Hydrogen Intercalation

Physical Review Letters (2019)

Jinyang Ni Pengbo Wang J. L. Lu Hongjun Xiang

Materials with a coexistence of magnetic and ferroelectric order (i.e., multiferroics) provide an efficient route for the control of magnetism by electric fields. Unfortunately, a long-sought room temperature multiferroic with strongly coupled ferroelectric and ferromagnetic (or ferrimagnetic) orderings is still lacking. Here, we propose that hydrogen intercalation in antiferromagnetic transition-metal oxides is a promising way to realize multiferroics with strong magnetoelectric coupling. Taking brownmillerite SrCoO_{2.5} as an example, we show that hydrogen intercalated SrCoO_{2.5} displays strong ferrimagnetism and large electric polarization in which the hydroxide acts as a new knob to simultaneously control the magnetization and polarization at room temperature. We expect that ion intercalation will become a general way to design magnetoelectric and spintronic functional materials.

Ferrimagnetism

Magnetism

Magnetoelectric effect

10.1103/physrevlett.122.117601

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Citations (19)