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Updated: Jun 19, 2026
Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles
Published on: October 27, 2018
Polar Oxalate Fluoride KMn(C2O4)F with Triangular Arrangements of Mn2+-F-Mn2+ Spin Chains: Nonlinear Optical and
Ang Li1,2, Yun Lv2, Yanhong Wang2,3
1College of Food Science and Technology, Wuhan Business University, Wuhan 430056, China.
Abstract:
Multifunctional materials including magnetism and nonlinear optical activity are of great interest due to their wide applications. Herein, we report a novel polar mixed-anion oxalate fluoride KMn(C2O4)F 1 with one-dimensional (1D) Mn2+-F-Mn2+ spin chains arranged in triangular geometry, exhibiting both 1D magnetism and nonlinear optical activity. Compound 1 crystallizes in the polar Cmc21 space group and is a nonlinear optical material with the efficiency of second harmonic generation (SHG) ∼0.2 times that of KH2PO4 (KDP). Magnetic measurement results indicate typical low-dimensional magnetism, with a broad maximum around 25 K, which suggests strong intrachain interactions with a Weiss temperature of -60(1) K. Additionally, 1 undergoes a long-range antiferromagnetic ordering at ∼11 K, which is further confirmed by the heat capacity result. Our work demonstrates the potential of using mixed anions to design and develop multifunctional materials with both low-dimensional magnetism and nonlinear optical activity.
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