Room-temperature ferromagnetism in the two-dimensional layered Cu2MoS4 nanosheets
Ke Zhang1, Rashid Khan1, Hongyan Guo2
1National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui 230029, China. song2012@ustc.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|December 24, 2016
Summary
Room-temperature ferromagnetism was discovered in ternary layered-Cu2MoS4 nanosheets. This magnetic behavior, originating from molybdenum atoms, intensifies with lower temperatures.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Solid State Chemistry
Background:
- Ternary layered compounds offer unique electronic and magnetic properties.
- Exploring novel materials for room-temperature magnetic applications is crucial.
Purpose of the Study:
- To investigate the magnetic properties of ternary layered-Cu2MoS4 nanosheets.
- To determine the origin of ferromagnetism in this material at room temperature.
Main Methods:
- Synthesis of ternary layered-Cu2MoS4 nanosheets.
- Characterization using electron paramagnetic resonance (EPR) spectroscopy.
- First-principles calculations and atomic structure analysis.
Main Results:
- Observation of room-temperature ferromagnetic behavior in Cu2MoS4 nanosheets.
- Coercivity and magnetization saturation increase with decreasing temperature.
- EPR spectroscopy confirmed a high g value, consistent with magnetic ordering.
Conclusions:
- The ferromagnetism in Cu2MoS4 originates from edged molybdenum atoms.
- The material exhibits promising properties for potential spintronic applications.
- Temperature dependence of magnetic properties provides insights into the underlying mechanisms.
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