Abnormal room temperature ferromagnetism in CuO-ZnO heterostructures: interface related or not?
@article{Gao2015AbnormalRT,
title={Abnormal room temperature ferromagnetism in CuO-ZnO heterostructures: interface related or not?},
author={Daqiang Gao and Zhipeng Zhang and You Li and Baorui Xia and Shoupeng Shi and Desheng Xue},
journal={Chemical communications},
year={2015},
volume={51 6},
pages={
1151-3
}
}We report the new functionality of room temperature ferromagnetism in CuO-ZnO heterostructures. Magnetic measurement results indicate the CuO-ZnO heterostructures show enhanced ferromagnetism contrary to the pure CuO (ZnO) and the observed ferromagnetism is proportional to the interface counts for the film-heterostructures, providing proof of interface related ferromagnetism. Our study suggests that magnetically functional interfaces could be an entirely new and novel design of magnetic…
13 Citations
Abnormal room temperature ferromagnetism in CuO/ZnO nanocomposites via hydrothermal method
- Materials Science
- 2017
Interface-induced d0 ferromagnetism in undoped ZnO thin films grown on different oriented sapphire substrates
- Materials ScienceJournal of Materials Science: Materials in Electronics
- 2019
The origin of d0 ferromagnetism in ZnO material still remains an open question. Here, we report a systematic study of the structural, optical, Raman and magnetic properties of undoped ZnO films grown…
CuO nanosheets/ZnO nanorods synthesized by a template-free hydrothermal approach and their optical and magnetic characteristics
- Materials Science
- 2017
Electronic Structure and Ferromagnetism Modulation in Cu/Cu2O Interface: Impact of Interfacial Cu Vacancy and Its Diffusion
- Materials ScienceScientific reports
- 2015
First principles calculations are performed on the interface structure to explore the microscopic mechanism of the FM and provide insights into the FM mechanism and tuning the FM via interfacial cation diffusion in the Cu/Cu2O contact.
Optical and ferromagnetic properties of hydrothermally synthesized CeO2/CuO nanocomposites
- Materials Science
- 2017
Effects of Copper Dopants on the Magnetic Property of Lightly Cu-Doped ZnO Nanocrystals
- Materials ScienceNanomaterials
- 2020
Results indicate that Cu ions can enhance the long-range ferromagnetic ordering at an ultralow concentration, but antiferromagnetic “Cu+-Vo-Cu2+” couples may also be generated, even at a very low Cu-doping concentration.
Room Temperature Ferromagnetism: Nonmagnetic Semiconductor Oxides and Nonmagnetic Dopants
- Materials Science, PhysicsJournal of Electronic Materials
- 2021
Advances in room temperature ferromagnetic semiconductors increase the opportunity to commercialize full spintronic devices. The manipulation of electron spin in semiconductor materials has driven…
Defect induced ferromagnetic ordering in epitaxial Zn0.95Mn0.05O films on sapphire (0 0 0 1).
- Physics, Materials ScienceJournal of physics. Condensed matter : an Institute of Physics journal
- 2019
Comparison of x-ray absorption spectra of ZMO with those of ZnO epilayers at O K-, Zn K-, and L 3-edges indicates that the substitution of the Zn site with Mn enhances the charge-transfer (CT) transition and the presence ofZn vacancies (VZn) also dominate the photoluminescence (PL) spectrum, implying that the formation of numerous VZn defects plays an important role in activating FM interactions.
Remarkable magnetic properties of undoped NiO-based nanocomposites: size and surface/interface effects
- Materials ScienceJournal of Materials Science: Materials in Electronics
- 2017
Nanosized and surface/interface effects on the room temperature ferromagnetic properties of NiO-based nanocomposites have been investigated. Pure NiO nanoparticles and NiO-based nanocomposites…
References
SHOWING 1-10 OF 23 REFERENCES
Interface mediated ferromagnetism in bulk CuO/Cu2O composites
- Materials Science, Physics
- 2012
In this letter, we report the interface-related room temperature ferromagnetism in bulk CuO/Cu2O composites which were synthesized by heat-decomposing or oxidation methods with the CuO and Cu2O as…
Emergent ferromagnetism in ZnO/Al2O3 core-shell nanowires: Towards oxide spinterfaces
- Materials Science
- 2013
We report that room-temperature ferromagnetism emerges at the interface formed between ZnO nanowire core and Al2O3 shell although both constituents show mainly diamagnetism. The interface-based…
Room-temperature ferromagnetism in antiferromagnetic cobalt oxide nanooctahedra.
- Materials ScienceNano letters
- 2014
The nearly perfectly octahedral shaped particles with 20, 40, and 85 nm edge length show a weak room-temperature ferromagnetism that can be attributed to ferromagnetic correlations appearing due to strained lattice configurations at the CoO/Co3O4 interface.
Surface magnetism in ZnO/Co3O4 mixtures
- Physics, Materials Science
- 2010
We recently reported the observation of room temperature ferromagnetism in mixtures of ZnO and Co3O4 despite the diamagnetic and antiferromagnetic character of these oxides, respectively. Here, we…
Interface double-exchange ferromagnetism in the Mn-Zn-O system: new class of biphase magnetism.
- Materials SciencePhysical review letters
- 2005
In this Letter, we experimentally show that the room temperature ferromagnetism in the Mn-Zn-O system recently observed is associated with the coexistence of Mn(3+) and Mn(4+) via a double-exchange…
Room-temperature ferromagnetism of Cu-doped ZnO films probed by soft X-ray magnetic circular dichroism.
- Physics, Materials SciencePhysical review letters
- 2010
It is found that a sufficient amount of both oxygen vacancies (V(O)) and Cu impurities is essential to the observed ferromagnetism, and a non-negligible portion of Cu impurity is uninvolved in the magnetic order.
Magnetic and superconducting phases at the LaAlO 3 /SrTiO 3 interface: The role of interfacial Ti 3 d electrons
- Physics, Materials Science
- 2012
Ferromagnetism and superconductivity are in most cases adverse. However, recent experiments reveal that they coexist at interfaces of LaAlO3 and SrTiO3. We analyze the magnetic state within density…
Transforming from paramagnetism to room temperature ferromagnetism in CuO by ball milling
- Materials Science, Physics
- 2011
In this work, we experimentally demonstrate that it is possible to induce ferromagnetism in CuO by ball milling without any ferromagnetic dopant. The magnetic measurements indicate that paramagnetic…
Titanium dxy ferromagnetism at the LaAlO3/SrTiO3 interface.
- PhysicsNature materials
- 2013
Spectroscopic investigations of the magnetism using element-specific techniques, including X-ray magnetic circular dichroism andX-ray absorption spectroscopy, are reported, finding direct evidence for in-plane ferromagnetic order at the interface with Ti(3+) character in the dxy orbital of the anisotropic t2g band.
Induced Ferromagnetism at BiFeO3/YBa2Cu3O7 Interfaces
- Materials Science, PhysicsScientific reports
- 2014
Results from first-principles calculations on the magnetism at the BiFeO3/YBa2Cu3O7 interfaces show that a metallic ferromagnetism is induced near the interface, confirmed by the presence of a hysteresis loop in field-dependent magnetization data.



