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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
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Design and synthesis of stable cobalt-based weak ferromagnetic framework with large spin canting angle
Ting Liu1, Su-Mei Gao, Long-Yang Xu
1School of Chemistry and Chemical Engineering, Tianjin University of Technology , No. 391 Binshui Xilu Road, Tianjin 300384, P. R. China.
Inorganic Chemistry
|December 3, 2014
Summary
Designing framework-structured weak ferromagnets with large spin canting angles is challenging. This study reports four cobalt compounds, with one exhibiting a large 14.8° canting angle and high stability, paving the way for advanced magnets.
Area of Science:
- Materials Science
- Solid State Chemistry
- Magnetism
Background:
- Designing framework-structured weak ferromagnets with large spin canting angles remains a significant challenge for high-performance magnet development.
- Antisymmetric interaction is a key strategy for inducing spin canting in magnetic materials.
Purpose of the Study:
- To design and synthesize novel framework-structured cobalt compounds utilizing antisymmetric interactions to achieve spin canting.
- To investigate the structural and magnetic properties of the synthesized compounds.
Main Methods:
- X-ray single crystal diffraction for structural analysis.
- Thermogravimetric analysis (TGA) and Powder X-ray Diffraction (PXRD) for stability and phase purity.
- Magnetic measurements to determine magnetic properties, including spin canting and Néel temperature (TN).
Main Results:
- Four cobalt compounds were successfully designed and synthesized.
- Compound 1 exhibits a 2D structure, complex 2 a 3D framework, and complex 3 a 3D net with a rare β-SnF2 topology, trapping solvent molecules.
- Compound 3 demonstrates the designed spin canting with a large angle of 14.8° and a TN of approximately 4.0 K.
- Compound 3 shows high stability, maintaining its framework in air for over 12 months, with guest molecule exchange possible.
Conclusions:
- The study successfully designed and synthesized framework-structured cobalt compounds with targeted spin canting properties.
- Compound 3 represents a promising material for high-performance magnets due to its large spin canting angle and exceptional stability.
- The framework's ability to host and exchange guest molecules offers potential for further functionalization.
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