Article
Chemistry, Physical
Wanwan Zhang, Meiyan Cui, Jindou Tian, Pengfeng Jiang, Guoyu Qian, Xia Lu
Summary: A mixed-valence manganese selenite with a three-dimensional framework structure has been successfully synthesized. The compound exhibits two consecutive long-range antiferromagnetic orderings and a field-induced spin-flop transition at low temperature.
Article
Materials Science, Multidisciplinary
G. Subias, J. Blasco, J. Herrero-Martin, J. A. Rodriguez-Velamazan, M. Valvidares, R. Fan, P. Steadman, J. Garcia
Summary: The study provides a comprehensive investigation on the magnetic ground state of La1.5Ca0.5CoO4, revealing magnetic phase transitions and structural changes in the crystal lattice. Combined single crystal neutron diffraction and resonant magnetic x-ray scattering techniques offer detailed insights into the magnetic ordering and structural evolution of the material, enhancing our understanding of its magnetic properties.
Article
Physics, Multidisciplinary
Shin Nakamura, Takuro Katsufuji
Summary: The Fe2+/Fe3+ charge order in LuFe2O4 has been examined by Mossbauer quadrupole effect, with results indicating that the CO monoclinic structure is most probable among the structural models proposed so far.
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
(2021)
Article
Chemistry, Physical
Sergei A. Egorov, Robert A. Evarestov
Summary: In this study, a colossal spin splitting was reported in the collinear antiferromagnetic MnF2 (110) monolayer, obtained from first-principles calculations. The spin splitting, induced by Pekar-Rashba AFM with a magnetic mechanism, was observed for all wave vectors in the 2D Brillouin zone. A simple and generic procedure for determining the magnetic layer group of the monolayer structure was proposed, contrasting with the smaller and symmetry-dependent spin splitting reported in the bulk structure of MnF2.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Chemistry, Physical
Mintu Debnath, Bhaskar Biswas, Esa Bose, Sambhu Charan Das, Souvik Chatterjee, Sudipta Pal
Summary: This study reports on the structural, magnetic, and dielectric properties of Pr0.45Ca0.55Mn1-xVxO3 polycrystalline compounds. It is found that the charge ordering strength weakens and the ferromagnetic components develop in the antiferromagnetic background with a change in vanadium content. Additionally, colossal dielectric constant is observed in both samples.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Jinbo Zhang, Weiwei Xia, Mingtao Li, Zhipeng Yan, Saqib Rahman, Xianghua Zeng, Lin Wang, Jaeyong Kim
Summary: The study investigates the effects of pressure on the crystal structure, band gap, and transport behavior of mixed-valence compound Sn3O4. The results show a transition in transport mechanism under pressure, with significant changes in band gap and resistance. These findings suggest potential applications in photocatalysis and provide insights for high-performance photoelectric device design.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Jinmei Qian, Hong Zhang, Gaoyang Li, Lei Jia, Xuebing Peng, Chenglin Zhong, Feng Li, Dongliang Chao, Daqiang Gao
Summary: Magnetic field-enhanced electrocatalytic activity has become an effective strategy for electrocatalytic reactions. This study found that the negative magnetoresistance effect contributes significantly to the enhancement of the oxygen evolution reaction (OER) in La1-xSrxMnO3, and applying a magnetic field of 1.0 T reduces the OER overpotential and charge-transfer resistance. Additionally, the power density of a Zn-air battery (ZnAB) based on La0.8Sr0.2MnO3 improves by 5.9 times under 1.0 T magnetic field. These findings demonstrate that magnetic field regulation of charge and spin ordering provides a deeper understanding for designing high-performance ZnABs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Isaac M. Carvalho, Helena Braganca, Walber H. Brito, Maria C. O. Aguiar
Summary: This study investigates the formation of charge and spin ordering starting from a noninteracting state under finite electronic interactions. Using time-dependent density matrix renormalization group, the researchers analyze linear finite-time quenches in on-site and nearest-neighbor interactions, identifying impulse, intermediate, and adiabatic regimes of time evolution. The findings show that the adiabatic regime is reached with distinct ramping timescales depending on whether charge density wave (CDW) or spin density wave (SDW) is formed, with interesting observations in the intermediate regime.
Article
Chemistry, Physical
C. H. Prashanth, T. W. Yen, Ajay Tiwari, P. Athira, S. M. Huang, Bommareddy Poojitha, D. P. Gulo, H. L. Liu, C. W. Wang, Y. K. Lin, Y. C. Chuang, Y. C. Lai, Krishnamurthy Jyothinagaram, H. D. Yang, D. Chandrasekhar Kakarla
Summary: In this study, the magnetoelectric properties of a polycrystalline BaHoFeO4 system were analyzed in detail. The crystal structure was confirmed to be preserved down to the lowest temperature using synchrotron x-ray powder diffraction. The system exhibited complex magnetic behavior with multiple magnetic transitions and a strong coupling between magnetism and dielectric properties was observed. The interplay between the complex magnetic modulation of Ho and Fe magnetic sublattices was found to play a vital role in the magnetoelectric properties of BaHoFeO4.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yixuan Huang, Xiao-Yu Dong, D. N. Sheng, C. S. Ting
Summary: In this paper, we investigated the frustrated XY model on the honeycomb lattice and demonstrated the emergence of the Kalmeyer-Laughlin CSL due to the interplay of magnetic frustration and chiral interactions. This nonmagnetic CSL is characterized by specific features such as scalar chiral order and chiral entanglement spectrum, described by chiral SU(2)(1) conformal field theory.
Article
Chemistry, Physical
Pablo Roseiro, Nadia Ben Amor, Vincent Robert
Summary: The spin states of a Co(II) oxoverdazyl compound are investigated in this study. The results show a mixture of low-spin and high-spin states, which is influenced by the structure of the coordination sphere. This finding has significant implications for molecular magnetism.
Article
Materials Science, Multidisciplinary
Menglei Li, Shaobo Cheng, Wenbin Wang, Xing Li, Na Wang, Yimei Zhu
Summary: The study investigates oxide superlattices composed of hexagonal LuFeO3 (h-LuFeO3) and LuFe2O4 using density functional theory calculations. The coexistence of CO-induced polarizations and geometric polarizations in different periodicities of superlattices is observed, with LuFe2O4 favoring ferroelectric states over antiferroelectric states. Out-of-plane polarizations tend to align in parallel between h-LuFeO3 and LuFe2O4 layers, and the overall polarization increases with the ratio of h-LuFeO3. The influence of layered polarizations on the local electrostatic potential is minimal, except for small trends caused by CO-induced polarizations within FeO bilayers.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Quentin Sallembien, Pamela Aoun, Sebastien Blanchard, Laurent Bouteiller, Matthieu Raynal
Summary: The study investigates the structure of mixed valence assemblies formed by irradiating triarylamine trisamide (TATA) molecules and explores the interplay between the hydrogen bonding network and the rate of electron transport. The findings suggest that hydrogen bonding is necessary but not sufficient for fast electron transfer rates, and a delicate balance between hydrogen bonds and packing is required for efficient charge transport.
CHEMISTRY-A EUROPEAN JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
A. A. Zvyagin, V. V. Slavin
Summary: This article discusses the stability of quantum spin-1 chain materials and their relationship to spin nematic ordering. The study found that spin nematic ordering is related to the spin subsystem's spin nematic order parameter, coupling to the elastic subsystem of the crystal, and interaction with ultracold bosons in a one-dimensional optical lattice.
Article
Materials Science, Multidisciplinary
I Vinograd, R. Zhou, H. Mayaffre, S. Kramer, S. K. Ramakrishna, A. P. Reyes, T. Kurosawa, N. Momono, M. Oda, S. Komiya, S. Ono, M. Horio, J. Chang, M-H Julien
Summary: This study examines the characteristics of the magnetic ground state under high magnetic fields in La2-xSrxCuO4 through NMR measurements and quantitative analysis, explaining the effects of the magnetic field on magnetic transitions, as well as the changes in spin fluctuations near the onset of static charge order.