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Sb-Based antiferromagnetic oxychlorides: MSb2O3(OH)Cl (M = Mn, Fe, Co) with 2D spin-dimer structures
Lei Geng1, Qiang Li2, Hongyan Lu1
1College of Physics and Electronic Information, Huaibei Normal University, Huaibei, Anhui 235000, China. lgeng.cn@gmail.com.
Dalton Transactions (Cambridge, England : 2003)
|October 30, 2016
Summary
Three new antimony-based oxychlorides were synthesized, exhibiting diverse magnetic behaviors from antiferromagnetism to weak ferromagnetism. This research opens avenues for creating novel low-dimensional oxyhalide materials.
Area of Science:
- Materials Science
- Solid State Chemistry
- Inorganic Chemistry
Background:
- Antiferromagnetic and ferromagnetic materials are crucial for advanced electronic devices.
- Low-dimensional oxyhalides offer unique properties due to reduced structural dimensionality.
- Synthesizing novel compounds with specific magnetic and optical characteristics is an ongoing challenge.
Purpose of the Study:
- To synthesize and characterize new antimony-based oxychlorides.
- To investigate the crystal structures and magnetic properties of these new compounds.
- To explore the potential of combining halide ions and lone-pair elements for novel material design.
Main Methods:
- Hydrothermal reaction methods were employed for synthesis.
- Crystal structures were determined, revealing isostructural frameworks with specific layer arrangements.
- Magnetic measurements and optical absorption spectroscopy were conducted.
Main Results:
- Three new isostructural antimony-based oxychlorides, MnSb2O3(OH)Cl, FeSb2O3(OH)Cl, and CoSb2O3(OH)Cl, were successfully synthesized.
- Compound 1 exhibits antiferromagnetic behavior, while compounds 2 and 3 display weak ferromagnetic properties due to spin-canting.
- Optical absorption band gaps were determined to be 3.8 eV, 2.4 eV, and 3.6 eV for compounds 1, 2, and 3, respectively.
Conclusions:
- The simultaneous use of halide ions and lone-pair elements is an effective strategy for synthesizing low-dimensional oxyhalides.
- The synthesized compounds possess tunable magnetic and optical properties.
- This work provides a feasible route for the development of new low-dimensional functional materials.
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