Shui-Mei Liang

The emerging altermagnetic RuO2 with both compensated magnetic moments and broken time-reversal symmetry possesses nontrivial magneto-electronic responses and nonrelativistic spin currents, which are closely related to magnetic easy axis. To probe the N\'eel order in RuO2, we conducted Ru M3-edge X-ray magnetic linear dichroism (XMLD) measurement. For epitaxial RuO2 films, characteristic XMLD signals can be observed in either RuO2(100) and RuO2(110) at normal incidence or RuO2(001) at oblique incidence, and the signals disappear when test temperature exceeds N\'eel temperature. For nonepitaxial RuO2 films, the flat lines in the XMLD patterns of RuO2(100) and RuO2(110) demonstrate that there is no in-plane uniaxial alignment of N\'eel order in these samples, due to the counterbalanced N\'eel order of the twin crystals evidenced by X-ray diffraction phi-scan measurements. Our experimental results unambiguously demonstrate the antiferromagnetism in RuO2 films and reveal the spatial relation of N\'eel order to be parallel with RuO2 [001] crystalline axis. These research findings would deepen our understanding of RuO2 and other attractive altermagnetic materials applied in the field of spintronics.

Linear dichroism

10.48550/arxiv.2412.17016

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CCDC 1015418: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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/cc132mf7

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CCDC 1015420: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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.

Crystal (programming language)

10.5517/cc132mh9

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Structural evolution of ZrO2–mullite nanocomposites from the Si–Al–Zr–O amorphous bulk

Phase Transitions (2011)

Xiaoping Tan Shui-Mei Liang Guo Wei Zhang Yichen ZHANG Lanyi Chai

ZrO2–mullite nanocomposites were fabricated by in-situ-controlled crystallization of Si–Al–Zr–O amorphous bulk at 800–1250°C. The structural evolution of the Si–Al–Zr–O amorphous, annealed at different temperatures, was studied by X-ray diffraction, infrared, Laser Raman spectroscopy, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. The materials consisted of an amorphous phase up to 920°C at which phase separation of Si-rich and Al, Zr-rich clusters occurred. The crystalline phases of t-ZrO2 and mullite were observed at 950°C and 1000°C, respectively. Mullite with a tetragonal structure, formed by the reaction between Al–Si spinel and amorphous silica at low temperature, changed into an orthorhombic structure with the increase of temperature. It was the phase segregation that improved crystallization of the Si–Al–Zr–O amorphous bulk. The anisotropic growth of mullite was observed and the phase transformation from t-ZrO2 to m-ZrO2 occurred when the temperature was higher than 1100°C.

Mullite

Tetragonal crystal system

Orthorhombic crystal system

10.1080/01411594.2010.528738

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CCDC 1015421: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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.

Crystal (programming language)

10.5517/cc132mjb

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Probing the Néel order in altermagnetic RuO₂ films by X-ray magnetic linear dichroism

Chinese Physics Letters (2025)

Yichi Zhang Hua Bai Chong Chen Lei Han Shui-Mei Liang

Abstract The emerging altermagnetic RuO 2 with both compensated magnetic moments and broken time-reversal symmetry possesses nontrivial magneto-electronic responses and nonrelativistic spin currents, which are closely related to magnetic easy axis. To probe the Néel order in RuO 2 , we conducted Ru M 3 -edge X-ray magnetic linear dichroism (XMLD) measurement. For epitaxial RuO 2 films, characteristic XMLD signals can be observed in either RuO 2 (100) and RuO 2 (110) at normal incidence or RuO 2 (001) at oblique incidence, and the signals disappear when test temperature exceeds Néel temperature. For nonepitaxial RuO 2 films, the flat lines in the XMLD patterns of RuO 2 (100) and RuO 2 (110) demonstrate that there is no in-plane uniaxial alignment of Néel order in these samples, due to the counterbalanced Néel order of the twin crystals evidenced by X-ray diffraction phi-scan measurements. Our experimental results unambiguously demonstrate the antiferromagnetism in RuO 2 films and reveal the spatial relation of Néel order to be parallel with RuO 2 [001] crystalline axis. These research findings would deepen our understanding of RuO 2 and other attractive altermagnetic materials applied in the field of spintronics.

Linear dichroism

Dichroism

10.1088/0256-307x/42/2/027301

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CCDC 1015417: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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.

Crystal (programming language)

10.5517/cc132md6

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CCDC 1015416: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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/cc132mc5

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CCDC 1015419: Experimental Crystal Structure Determination

The Cambridge Structural Database (2015)

Xiaoming Lin Yujia Ding Shui-Mei Liang Si-Xiao Ge Lei-Ming Wei

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.

Crystal (programming language)

10.5517/cc132mg8

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Shui-Mei Liang

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