1
|
Chai Y, Lou Q, Xu M, Hong S, Feng F, Liu Y, Li Q, Feng X, Xiao H, Chen A, Wang X, Yao L. Modulation of Magnetic Exchange Coupling via Constructing Bi- or Multimagnetic Heterointerfaces. J Phys Chem Lett 2022; 13:12082-12089. [PMID: 36546645 DOI: 10.1021/acs.jpclett.2c02922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
How to resolve contradictions between the nanoscale size and high saturation magnetization (Ms) remains one of the scientific challenges in nanoscale magnetism as the theoretical optimal Ms of nanocrystals is compromised by the surface spin disorder. Here, we proposed a novel nanotechnology solution, heterointerface constructions of exchange-coupling core-shell nanocrystals, to rearrange the surface spin for the enhancement of Ms of nanomagnetic materials. As a demonstration of this principle, single-interface coupling FePt@Fe3-δO4 core/shell nanocrystals and multi-interface coupling FePt@Fe3-δO4@MFe2O4 (M = Mn or Co) core/shell/shell nanocrystals were synthesized. The simulated and experimental results demonstrated that constructing coupling heterointerfaces orientates the overall magnetic moment, ultimately enhancing the Ms of nanomagnetic materials. Moreover, this work first demonstrated that the origin of coupling heterointerfaces arose from mismatched lattices rather than chemical composition mismatch at the core-shell interfaces, thus providing both a solution to unite different mechanisms and an explanation to explain the exchange coupling at heterointerfaces.
Collapse
Affiliation(s)
- Yahong Chai
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qi Lou
- Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Min Xu
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Song Hong
- Analytical Test Center, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Feng Feng
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Yajing Liu
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Qilong Li
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xueyan Feng
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Hanzhang Xiao
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Ao Chen
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiuyu Wang
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- Institute of Process Equipment, College of Energy Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Li Yao
- Beijing National Laboratory for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| |
Collapse
|
2
|
Zhang K, Zhernenkov K, Saerbeck T, Glavic A, Qu L, Kinane CJ, Caruana AJ, Hua E, Gao G, Jin F, Ge B, Cheng F, Pütter S, Koutsioubas A, Mattauch S, Brueckel T, Su Y, Wang L, Wu W. Soliton-Mediated Magnetic Reversal in an All-Oxide-Based Synthetic Antiferromagnetic Superlattice. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20788-20795. [PMID: 33877796 DOI: 10.1021/acsami.1c02506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
All-oxide-based synthetic antiferromagnets (SAFs) are attracting intense research interest due to their superior tunability and great potentials for antiferromagnetic spintronic devices. In this work, using the La2/3Ca1/3MnO3/CaRu1/2Ti1/2O3 (LCMO/CRTO) superlattice as a model SAF, we investigated the layer-resolved magnetic reversal mechanism by polarized neutron reflectivity. We found that the reversal of LCMO layer moments is mediated by nucleation, expansion, and shrinkage of a magnetic soliton. This unique magnetic reversal process creates a reversed magnetic configuration of the SAF after a simple field cycling. Therefore, it can enable vertical data transfer from the bottom to the top of the superlattice. The physical origin of this intriguing magnetic reversal process could be attributed to the cooperation of the surface spin-flop effect and enhanced uniaxial magnetic anisotropy of the bottom LCMO layer. This work may pave a way to utilize all-oxide-based SAFs for three-dimensional spintronic devices with vertical data transfer and high-density data storage.
Collapse
Affiliation(s)
- Kexuan Zhang
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Kirill Zhernenkov
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Thomas Saerbeck
- Institut Laue-Langevin, 71 Avenue des Martyrs, CS 20156, 38042 Grenoble Cedex 9, France
| | - Artur Glavic
- Laboratory for Neutron and Muon Instrumentation, Paul Scherrer Institut, 5232 Villigen PSI, Switzerland
| | - Lili Qu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Christy J Kinane
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Andrew J Caruana
- ISIS Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Oxford, Didcot OX11 0QX, United Kingdom
| | - Enda Hua
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Guanyin Gao
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Feng Jin
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Binghui Ge
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Feng Cheng
- Institutes of Physical Science and Information Technology, Anhui University, Hefei 230601, China
| | - Sabine Pütter
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Alexandros Koutsioubas
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Stefan Mattauch
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Thomas Brueckel
- Jülich Centre for Neutron Science (JCNS-2) and Peter Grünberg Institute (PGI-4), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
| | - Yixi Su
- Jülich Centre for Neutron Science JCNS at Heinz Maier-Leibnitz Zentrum, Forschungszentrum Jülich, Lichtenbergstr. 1, D-85747 Garching, Germany
| | - Lingfei Wang
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
| | - Wenbin Wu
- Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, China
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, China
| |
Collapse
|
3
|
Chen B, Gauquelin N, Green RJ, Lee JH, Piamonteze C, Spreitzer M, Jannis D, Verbeeck J, Bibes M, Huijben M, Rijnders G, Koster G. Spatially Controlled Octahedral Rotations and Metal-Insulator Transitions in Nickelate Superlattices. NANO LETTERS 2021; 21:1295-1302. [PMID: 33470113 PMCID: PMC7883389 DOI: 10.1021/acs.nanolett.0c03850] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The properties of correlated oxides can be manipulated by forming short-period superlattices since the layer thicknesses are comparable with the typical length scales of the involved correlations and interface effects. Herein, we studied the metal-insulator transitions (MITs) in tetragonal NdNiO3/SrTiO3 superlattices by controlling the NdNiO3 layer thickness, n in the unit cell, spanning the length scale of the interfacial octahedral coupling. Scanning transmission electron microscopy reveals a crossover from a modulated octahedral superstructure at n = 8 to a uniform nontilt pattern at n = 4, accompanied by a drastically weakened insulating ground state. Upon further reducing n the predominant dimensionality effect continuously raises the MIT temperature, while leaving the antiferromagnetic transition temperature unaltered down to n = 2. Remarkably, the MIT can be enhanced by imposing a sufficiently large strain even with strongly suppressed octahedral rotations. Our results demonstrate the relevance for the control of oxide functionalities at reduced dimensions.
Collapse
Affiliation(s)
- Binbin Chen
- MESA+
Institute for Nanotechnology, University
of Twente, 7500 AE Enschede, The Netherlands
| | - Nicolas Gauquelin
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium
| | - Robert J. Green
- Department
of Physics and Engineering Physics, University
of Saskatchewan, 116 Science Place, Saskatoon, Saskatchewan S7N 5E2, Canada
- Stewart
Blusson Quantum Matter Institute, University
of British Columbia, 111-2355 E Mall, Vancouver, British Columbia V6T 1Z4, Canada
| | - Jin Hong Lee
- Unité
Mixte de Physique, CNRS, Thales, Univ. Paris-Sud,
Université Paris-Saclay, 91767 Palaiseau, France
| | - Cinthia Piamonteze
- Swiss Light
Source, Paul Scherrer Institute, PSI, 5232 Villigen, Switzerland
| | - Matjaž Spreitzer
- Advanced
Materials Department, Jožef Stefan
Institute, 1000 Ljubljana, Slovenia
| | - Daen Jannis
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium
| | - Johan Verbeeck
- Electron
Microscopy for Materials Science (EMAT), University of Antwerp, 2020 Antwerp, Belgium
| | - Manuel Bibes
- Unité
Mixte de Physique, CNRS, Thales, Univ. Paris-Sud,
Université Paris-Saclay, 91767 Palaiseau, France
| | - Mark Huijben
- MESA+
Institute for Nanotechnology, University
of Twente, 7500 AE Enschede, The Netherlands
| | - Guus Rijnders
- MESA+
Institute for Nanotechnology, University
of Twente, 7500 AE Enschede, The Netherlands
| | - Gertjan Koster
- MESA+
Institute for Nanotechnology, University
of Twente, 7500 AE Enschede, The Netherlands
- (G.K.)
| |
Collapse
|
4
|
Chen B, Gauquelin N, Jannis D, Cunha DM, Halisdemir U, Piamonteze C, Lee JH, Belhadi J, Eltes F, Abel S, Jovanović Z, Spreitzer M, Fompeyrine J, Verbeeck J, Bibes M, Huijben M, Rijnders G, Koster G. Strain-Engineered Metal-to-Insulator Transition and Orbital Polarization in Nickelate Superlattices Integrated on Silicon. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004995. [PMID: 33175414 DOI: 10.1002/adma.202004995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Epitaxial growth of SrTiO3 (STO) on silicon greatly accelerates the monolithic integration of multifunctional oxides into the mainstream semiconductor electronics. However, oxide superlattices (SLs), the birthplace of many exciting discoveries, remain largely unexplored on silicon. In this work, LaNiO3 /LaFeO3 SLs are synthesized on STO-buffered silicon (Si/STO) and STO single-crystal substrates, and their electronic properties are compared using dc transport and X-ray absorption spectroscopy. Both sets of SLs show a similar thickness-driven metal-to-insulator transition, albeit with resistivity and transition temperature modified by the different amounts of strain. In particular, the large tensile strain promotes a pronounced Ni 3 d x 2 - y 2 orbital polarization for the SL grown on Si/STO, comparable to that reported for LaNiO3 SL epitaxially strained to DyScO3 substrate. Those results illustrate the ability to integrate oxide SLs on silicon with structure and property approaching their counterparts grown on STO single crystal, and also open up new prospects of strain engineering in functional oxides based on the Si platform.
Collapse
Affiliation(s)
- Binbin Chen
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Nicolas Gauquelin
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Antwerp, 2020, Belgium
| | - Daen Jannis
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Antwerp, 2020, Belgium
| | - Daniel M Cunha
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Ufuk Halisdemir
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Cinthia Piamonteze
- Swiss Light Source, Paul Scherrer Institut, Villigen PSI, Villigen, CH-5232, Switzerland
| | - Jin Hong Lee
- Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, Palaiseau, 91767, France
| | - Jamal Belhadi
- Advanced Materials Department, Jožef Stefan Institute, Ljubljana, 1000, Slovenia
| | - Felix Eltes
- IBM Research Europe, Rüschlikon, Zürich, 8803, Switzerland
- Lumiphase AG, Zürich, 8003, Switzerland
| | - Stefan Abel
- IBM Research Europe, Rüschlikon, Zürich, 8803, Switzerland
- Lumiphase AG, Zürich, 8003, Switzerland
| | - Zoran Jovanović
- Advanced Materials Department, Jožef Stefan Institute, Ljubljana, 1000, Slovenia
- Laboratory of Physics, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, 11000, Serbia
| | - Matjaž Spreitzer
- Advanced Materials Department, Jožef Stefan Institute, Ljubljana, 1000, Slovenia
| | - Jean Fompeyrine
- IBM Research Europe, Rüschlikon, Zürich, 8803, Switzerland
- Lumiphase AG, Zürich, 8003, Switzerland
| | - Johan Verbeeck
- Electron Microscopy for Materials Science (EMAT), University of Antwerp, Antwerp, 2020, Belgium
| | - Manuel Bibes
- Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay, Palaiseau, 91767, France
| | - Mark Huijben
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Guus Rijnders
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| | - Gertjan Koster
- MESA+ Institute for Nanotechnology, University of Twente, Enschede, 7500 AE, The Netherlands
| |
Collapse
|
5
|
Lan D, Chen B, Qu L, Jin F, Guo Z, Xu L, Zhang K, Gao G, Chen F, Jin S, Wang L, Wu W. Interfacial Engineering of Ferromagnetism in Epitaxial Manganite/Ruthenate Superlattices via Interlayer Chemical Doping. ACS APPLIED MATERIALS & INTERFACES 2019; 11:10399-10408. [PMID: 30775907 DOI: 10.1021/acsami.8b22055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Interfacial charge transfer and structural proximity effects are the two essential routes to trigger and tune numerous functionalities of perovskite oxide heterostructures. However, the cooperation and competition of these two interfacial effects in one epitaxial system have not been fully understood. Herein, we fabricate a series of La0.67Ca0.33MnO3/CaRuO3 superlattices and introduce various chemical doping in the nonmagnetic CaRuO3 interlayers. We found that Ti, Sr, and La doping in the CaRuO3 layer can effectively tune the interfacial charge transfer and octahedral rotation, thus modulating the ferromagnetism of the superlattices. Specifically, the B-site Ti doping depletes the Ru 4d band and suppresses the interfacial charge transfer, leading to a decay of ferromagnetic Curie temperature ( TC). In contrast, the A-site Sr doping maintains a sizable charge transfer and meanwhile suppresses the octahedral rotation, which facilitates ferromagnetism and significantly enhances the TC up to 291 K. The La doping turns out to localize the itinerant electrons in the CaRuO3 layer, which suppresses both the interfacial charge transfer and ferromagnetism. The observed intriguing interfacial engineering of magnetism would pave a new way to understand the collective effects of interfacial charge transfer and structural proximity on the physical properties of oxide heterostructures.
Collapse
Affiliation(s)
- Da Lan
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Binbin Chen
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - LiLi Qu
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Feng Jin
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center , Chinese Academy of Sciences , Hefei 230031 , China
| | - Zhuang Guo
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Liqiang Xu
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Kexuan Zhang
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Guanyin Gao
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Feng Chen
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center , Chinese Academy of Sciences , Hefei 230031 , China
| | - Shaowei Jin
- Institute of Physical Science and Information Technology , Anhui University , Hefei 230601 , China
| | - Lingfei Wang
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
| | - Wenbin Wu
- Hefei National Laboratory for Physical Sciences at Microscale , University of Science and Technology of China , Hefei 230026 , China
- Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory and Hefei Science Center , Chinese Academy of Sciences , Hefei 230031 , China
- Institute of Physical Science and Information Technology , Anhui University , Hefei 230601 , China
| |
Collapse
|