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Low-Temperature Glassy Behavior of SrNi(CO)(OH)·3HO with Frustrated Spin Hexamers.
Inorg Chem
December 2024
Wuhan National High Magnetic Field Center and School of Physics, Huazhong University of Science and Technology, Wuhan 430074, P. R. China.
In this paper, we studied the synthesis, crystal structure, magnetism, and memory effect of a spin hexamer compound SrNi(CO)(OH)·3HO. The basic magnetic unit of this compound is a ringed spin hexamer (Ni cluster). These Ni clusters are connected by an oxalate group, constituting a two-dimensional framework along the plane.
View Article and Find Full Text PDFSubstrate Charge Transfer Induced Ferromagnetism in MnSe/SrTiO Ultrathin Films.
Nanomaterials (Basel)
August 2024
Institute of Physics, Academia Sinica, Taipei 11529, Taiwan.
The observation of superconductivity in MnSe at 12 GPa motivated us to investigate whether superconductivity could be induced in MnSe at ambient conditions. A strain-induced structural change in the ultrathin film could be one route to the emergence of superconductivity. In this report, we present the physical property of MnSe ultrathin films, which become tetragonal (stretched -plane and shortened -axis) on a (001) SrTiO (STO) substrate, prepared by the pulsed laser deposition (PLD) method.
View Article and Find Full Text PDFFlux Crystal Growth, Structure, and Optical Properties of LiLaTiSO: An Oxysulfide Phase Derived from KNiF-Type Structure.
Inorg Chem
August 2024
Research Center for Materials Nanoarchitechtonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan.
Single crystals of a new titanium oxysulfide, LiLaTiSO, were grown from a KI molten salt. Single-crystal X-ray diffraction analysis revealed that LiLaTiSO crystallizes in the space group with lattice parameters of = 11.7319(4) Å, = 3.
View Article and Find Full Text PDFGiant ab-Plane Birefringence in Quasi-1D Fibrous Red Phosphorus.
Angew Chem Int Ed Engl
July 2024
Engineering Research Center of Advanced Rare Earth Materials (Ministry of Education) Department of Chemistry, Tsinghua University, Beijing, 100084, China.
Article Synopsis
- Quasi-1D van der Waals crystal fibrous red phosphorus (RP) shows strong optical anisotropy, making it a promising material for polarization-related micro-nano devices.
- Despite its potential, there is a lack of detailed studies on its complex refractive index and the link between its unique structure and optical properties.
- This research calculated the refractive index of fibrous RP and found a maximum birefringence of 0.642 at 475 nm, indicating its superior optical characteristics compared to traditional and emerging materials, attributed to its specific electronic properties.
Giant Modulation of Refractive Index from Picoscale Atomic Displacements.
Adv Mater
June 2024
Institute of Materials Science and Engineering, Washington University in St. Louis, St. Louis, MO, 63130, USA.
It is shown that structural disorder-in the form of anisotropic, picoscale atomic displacements-modulates the refractive index tensor and results in the giant optical anisotropy observed in BaTiS, a quasi-1D hexagonal chalcogenide. Single-crystal X-ray diffraction studies reveal the presence of antipolar displacements of Ti atoms within adjacent TiS chains along the c-axis, and threefold degenerate Ti displacements in the a-b plane. Ti solid-state NMR provides additional evidence for those Ti displacements in the form of a three-horned NMR lineshape resulting from a low symmetry local environment around Ti atoms.
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