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Updated: Aug 11, 2026
11:54
Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures
Published on: February 8, 2018
Interfacial structure, evolution and magnetic properties of NiO/Cr2O3 heterostructures
Yidan Fan1, Tingting Yao2, Beibei Qiao3
1School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China; Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
Micron (Oxford, England : 1993)
|August 4, 2026
Summary
Thermally driven evolution of nickel oxide/chromium oxide (NiO/Cr2O3) interfaces creates distinct magnetic properties. Understanding interfacial changes is key for designing advanced functional oxide materials.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Nanotechnology
Background:
- Interfacial structure and its evolution significantly impact advanced material properties.
- Real oxide heterointerfaces are complex, necessitating study of their structural evolution and property effects.
Purpose of the Study:
- To investigate the thermally driven interfacial evolution in NiO/Cr2O3 heterostructures.
- To correlate interfacial structural changes with resulting magnetic properties.
Main Methods:
- Epitaxial growth of NiO/Cr2O3 heterostructures on SrTiO3 substrates via pulsed laser deposition.
- Controlled deposition temperatures and post-annealing treatments.
- Characterization using high-resolution X-ray diffraction (HRXRD), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDS).
- Magnetic property measurement using a superconducting quantum interference device (SQUID).
Main Results:
- Observed interfacial evolution from an ultrathin transition zone to a NiCr2O4 reaction interlayer, and finally to a NiO/NiCr2O4 bilayer with increasing temperature.
- All heterostructures exhibited weak ferrimagnetism.
- Saturation magnetization changed non-monotonically with interfacial structural evolution.
Conclusions:
- Thermally controlled interfacial reactions and structural evolution in NiO/Cr2O3 heterostructures lead to distinct magnetic characteristics.
- Provides a practical strategy for designing material interfaces and engineering performance in functional oxides.
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