J. Li

Peking University

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Z. Q. Qiu

University of California, Berkeley

Chanyong Hwang

Korea Research Institute of Standards and Science

Elke Arenholz

Institute of Electrical and Electronics Engineers

A. Tan

Imperial College London

A. Schöll

Lawrence Berkeley National Laboratory

Alpha T. N’Diaye

Lawrence Berkeley National Laboratory

Haifeng Hu

National Center for Nanoscience and Technology

Mengmeng Yang

Guangxi University

Qian Li

National Synchrotron Radiation Laboratory

Yang Meng

Institute of Physics

Cooperative Institutions

University of California, Berkeley

Chinese Academy of Sciences

Lawrence Berkeley National Laboratory

Peking University

University of Chinese Academy of Sciences

Tsinghua University

Nanjing University

Institute of Physics

University of Science and Technology of China

Fudan University

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CCDC 1861299: Experimental Crystal Structure Determination

The Cambridge Structural Database (2019)

Chengying Bai B. Liu Haifeng Hu J. Li X. Wang

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/ccdc.csd.cc20gtx7

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Citations (0)

Heterogeneous reactions of SO2 on ZnO particle surfaces

Science China Chemistry (2011)

J. Li Jing Shang Tong Zhu

Particle (ecology)

10.1007/s11426-010-4167-9

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Citations (34)

Design of a vector magnet for the measurements of anisotropic magnetoresistance and rotational magneto-optic Kerr effect

Review of Scientific Instruments (2012)

J. Li Eric N. Jin Ho Sung Son A. Tan Wei Cao

A vector magnet is designed and assembled with two electromagnets to produce a rotational magnetic field in any direction within a plane. This design allows a rotation of the magnetic field without a mechanical rotation of the magnets. The fast speed of the field rotation (~10 s for a complete 360° rotation) and the stability against mechanical vibration easily overcome the slow drifting effect in anisotropic magnetoresistance (AMR) and rotational magneto-optic Kerr effect (ROTMOKE) measurements. As an example we applied this vector magnet to carry out AMR and ROTMOKE measurements on epitaxial growth of Fe(10 nm)∕MgO(001) films. The result demonstrates the stability and high quality of the vector magnet in determining the magnetic anisotropy of magnetic thin films using AMR and ROTMOKE techniques.

Electromagnet

Magneto

10.1063/1.3698297

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Citations (27)

Self-Assembly of Large-Scale Floating TiO₂ Nanorod Arrays at the Gas–Liquid Interface

ACS Applied Materials & Interfaces (2013)

Huarong Xia J. Li Peng Chen Longwei Li Wentao Sun

This paper describes a facile one-step synthesis of large-scale floating TiO2 nanorod arrays via a hydrothermal reaction without using any surfactants, which opens a new way to prepare floating photocatalysts for photodecomposition of floating organics and free-standing nanorod arrays for flexible dye-sensitized solar cells. A general model is developed to analyze the driving force for the floating TiO2 film, which may be also useful for other two-dimensional materials to determine the obtainable size of an arbitrary shaped film floated by surface tension and buoyancy.

Nanorod

10.1021/am4026938

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Citations (7)

Novel Chiral Magnetic Domain Wall Structure inFe/Ni/Cu(001)Films

Physical Review Letters (2013)

Gang Chen Jianming Zhu A. Quesada J. Li Alpha T. N’Diaye

Using spin-polarized low energy electron microscopy, we discovered a new type of domain wall structure in perpendicularly magnetized Fe/Ni bilayers grown epitaxially on Cu(100). Specifically, we observed unexpected Néel-type walls with fixed chirality in the magnetic stripe phase. Furthermore, we find that the chirality of the domain walls is determined by the film growth order with the chirality being right handed in Fe/Ni bilayers and left handed in Ni/Fe bilayers, suggesting that the underlying mechanism is the Dzyaloshinskii-Moriya interaction at the film interfaces. Our observations may open a new route to control chiral spin structures using interfacial engineering in transition metal heterostructures.

Chirality

Domain wall (magnetism)

10.1103/physrevlett.110.177204

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Citations (249)

Determination of the Fe magnetic anisotropies and the CoO frozen spins in epitaxial CoO/Fe/Ag(001)

Physical Review B (2011)

J. Li Yang Meng J. S. Park Catherine Jenkins Elke Arenholz

CoO/Fe/Ag(001) films were grown epitaxially and studied by X-ray Magnetic Circular Dichroism (XMCD) and X-ray Magnetic Linear Dichroism (XMLD). After field cooling along the Fe[100] axis to 80 K, exchange bias, uniaxial anisotropy, and 4-fold anisotropy of the films were determined by hysteresis loop and XMCD measurements by rotating the Fe magnetization within the film plane. The CoO frozen spins were determined by XMLD measurement as a function of CoO thickness. We find that among the exchange bias, uniaxial anisotropy, and 4-fold anisotropy, only the uniaxial magnetic anisotropy follows thickness dependence of the CoO frozen spins.

Exchange bias

Hysteresis

Linear dichroism

10.1103/physrevb.84.094447

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Citations (18)

Magnetic properties of nanostructured Mn oxide particles

Applied Physics Letters (1997)

J. Li Yujia Wang B. S. Zou Xinni Wu Jia Lin

Nanostructured Mn oxide particles with an average size of about 7 nm have been prepared by a microemulsion method. X-ray diffraction analysis indicates that the particles possess orthorhombic structure of MnO(OH). The particles are ferromagnetic at low temperature. The Curie temperature is about 35 K and each MnO(OH) molecule generates a magnetic moment of about 0.7 μB. The appearance of the ferromagnetism at low temperature may result from size effect.

Orthorhombic crystal system

Microemulsion

10.1063/1.118745

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Citations (40)

Continuous spin reorientation transition in epitaxial antiferromagnetic NiO thin films

Physical Review B (2011)

J. Li Elke Arenholz Yang Meng A. Tan Andrew J. Park

Fe/NiO/MgO/Ag(001) films were grown epitaxially, and the Fe and NiO spin orientations were determined using x-ray magnetic dichroism. We find that the NiO spins are aligned perpendicularly to the in-plane Fe spins. Analyzing both the in-plane and out-of-plane spin components of the NiO layer, we demonstrate unambiguously that the antiferromagnetic NiO spins undergo a continuous spin reorientation transition from the in-plane to out-of-plane directions with increasing of the MgO thickness.

Non-blocking I/O

10.1103/physrevb.84.012406

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Citations (21)

Electric-Field Modulation of Interface Magnetic Anisotropy and Spin Reorientation Transition in (Co/Pt)₃/PMN–PT Heterostructure

ACS Applied Materials & Interfaces (2017)

Ying Sun You Ba Aitian Chen Wei He Wenbo Wang

We report electric-field control of magnetism of (Co/Pt)3 multilayers involving perpendicular magnetic anisotropy with different Co-layer thicknesses grown on Pb(Mg,Nb)O3-PbTiO3 (PMN-PT) FE substrates. For the first time, electric-field control of the interface magnetic anisotropy, which results in the spin reorientation transition, was demonstrated. The electric-field-induced changes of the bulk and interface magnetic anisotropies can be understood by considering the strain-induced change of magnetoelastic energy and weakening of Pt 5d-Co 3d hybridization, respectively. We also demonstrate the role of competition between the applied magnetic field and the electric field in determining the magnetization of the sample with the coexistence phase. Our results demonstrate electric-field control of magnetism by harnessing the strain-mediated coupling in multiferroic heterostructures with perpendicular magnetic anisotropy and are helpful for electric-field modulations of Dzyaloshinskii-Moriya interaction and Rashba effect at interfaces to engineer new functionalities.

Magnetism

10.1021/acsami.7b00284

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Citations (59)

Heterogeneous reaction of SO2 on TiO2 particles

Science China Chemistry (2010)

Jing Shang J. Li Tong Zhu

Diffuse reflection

Ultraviolet

Sodium sulfite

Reaction rate

10.1007/s11426-010-4160-3

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Citations (67)