1
|
Neilo A, Bakurskiy S, Klenov N, Soloviev I, Kupriyanov M. Spin-Valve-Controlled Triggering of Superconductivity. Nanomaterials (Basel) 2024; 14:245. [PMID: 38334516 DOI: 10.3390/nano14030245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 01/13/2024] [Accepted: 01/14/2024] [Indexed: 02/10/2024]
Abstract
We have studied the proximity effect in an SF1S1F2s superconducting spin valve consisting of a massive superconducting electrode (S) and a multilayer structure formed by thin ferromagnetic (F1,2) and superconducting (S1, s) layers. Within the framework of the Usadel equations, we have shown that changing the mutual orientation of the magnetization vectors of the F1,2 layers from parallel to antiparallel serves to trigger superconductivity in the outer thin s-film. We studied the changes in the pair potential in the outer s-film and found the regions of parameters with a significant spin-valve effect. The strongest effect occurs in the region of parameters where the pair-potential sign is changed in the parallel state. This feature reveals new ways to design devices with highly tunable inductance and critical current.
Collapse
Affiliation(s)
- Alexey Neilo
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
| | - Sergey Bakurskiy
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
| | - Nikolay Klenov
- National University of Science and Technology MISIS, Moscow 119049, Russia
- Dukhov All-Russia Research Institute of Automatics, Moscow 101000, Russia
- Faculty of Physics, Moscow State University, Moscow 119991, Russia
| | - Igor Soloviev
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
- Dukhov All-Russia Research Institute of Automatics, Moscow 101000, Russia
| | - Mikhail Kupriyanov
- Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, Moscow 119991, Russia
- National University of Science and Technology MISIS, Moscow 119049, Russia
| |
Collapse
|
2
|
Demazy N, Argudo PG, Fleury G. Competitive Registration Fields for The Development of Complex Block Copolymer Structures by A Layer-by-Layer Approach. Small 2023; 19:e2205254. [PMID: 36504447 DOI: 10.1002/smll.202205254] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 11/09/2022] [Indexed: 06/17/2023]
Abstract
Block copolymer (BCP) self-assembly in thin films is an elegant method to generate nanometric features with tunable geometrical configurations. By combining directed assembly and hybridization methods, advances in nano-manufacturing have been attested over the past decades with flagship applications in lithography and optics. Nevertheless, the range of geometrical configurations is limited by the accessible morphologies inherent to the energy minimization process involved in BCP self-assembly. Layering of nanostructured BCP thin films has been recently proposed in order to enrich the span of nanostructures derived from BCP self-assembly with the formation of non-native heterostructures such as double-layered arrays of nanowires or dots-on-line and dots-in-hole hierarchical structures. In this work, the layer-by-layer method is further exploited for the generation of nano-mesh arrays using nanostructured BCP thin films. In particular, a subtle combination of chemical and topographical fields is leveraged in order to demonstrate design rules for the controlled registration of a BCP layer on top of an underneath immobilized one by the precise tuning of the interfacial chemical field between the two BCP layers.
Collapse
Affiliation(s)
- Nils Demazy
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, Pessac, F-33600, France
| | - Pablo G Argudo
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, Pessac, F-33600, France
| | - Guillaume Fleury
- Univ. Bordeaux, CNRS, Bordeaux INP, LCPO, UMR 5629, Pessac, F-33600, France
| |
Collapse
|
3
|
Komogortsev SV, Vazhenina IG, Kleshnina SA, Iskhakov RS, Lepalovskij VN, Pasynkova AA, Svalov AV. Advanced Characterization of FeNi-Based Films for the Development of Magnetic Field Sensors with Tailored Functional Parameters. Sensors (Basel) 2022; 22:s22093324. [PMID: 35591014 PMCID: PMC9101519 DOI: 10.3390/s22093324] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 04/20/2022] [Accepted: 04/24/2022] [Indexed: 11/26/2022]
Abstract
Magnetometry and ferromagnetic resonance are used to quantitatively study magnetic anisotropy with an easy axis both in the film plane and perpendicular to it. In the study of single-layer and multilayer permalloy films, it is demonstrated that these methods make it possible not only to investigate the average field of perpendicular and in-plane anisotropy, but also to characterize their inhomogeneity. It is shown that the quantitative data from direct integral and local measurements of magnetic anisotropy are consistent with the direct and indirect estimates based on processing of the magnetization curves. The possibility of estimating the perpendicular magnetic anisotropy constant from the width of stripe domains in a film in the transcritical state is demonstrated. The average in-plane magnetic anisotropy field of permalloy films prepared by magnetron sputtering onto a Corning glass is almost unchanged with the thickness of a single-layer film. The inhomogeneity of the perpendicular anisotropy field for a 500 nm film is greater than that for a 100 nm film, and for a multilayer film with a total permalloy thickness of 500 nm, it is greater than that for a homogeneous film of the same thickness.
Collapse
Affiliation(s)
- Sergey V. Komogortsev
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (I.G.V.); (S.A.K.); (R.S.I.)
- Institute of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russia
- Correspondence:
| | - Irina G. Vazhenina
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (I.G.V.); (S.A.K.); (R.S.I.)
- Institute of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Sofya A. Kleshnina
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (I.G.V.); (S.A.K.); (R.S.I.)
- Institute of Physics, Siberian Federal University, 660041 Krasnoyarsk, Russia
| | - Rauf S. Iskhakov
- Kirensky Institute of Physics, Federal Research Center KSC SB RAS, 660036 Krasnoyarsk, Russia; (I.G.V.); (S.A.K.); (R.S.I.)
| | - Vladimir N. Lepalovskij
- Department of Magnetism of Solid State, Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Ekaterinburg, Russia; (V.N.L.); (A.A.P.); (A.V.S.)
| | - Anna A. Pasynkova
- Department of Magnetism of Solid State, Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Ekaterinburg, Russia; (V.N.L.); (A.A.P.); (A.V.S.)
- Laboratory of Advanced Magnetic Materials, Institute of Metal Physics UD RAS, 620108 Ekaterinburg, Russia
| | - Andrey V. Svalov
- Department of Magnetism of Solid State, Institute of Natural Sciences and Mathematics, Ural Federal University, 620002 Ekaterinburg, Russia; (V.N.L.); (A.A.P.); (A.V.S.)
| |
Collapse
|
4
|
Edri E, Armon N, Greenberg E, Moshe-Tsurel S, Lubotzky D, Salzillo T, Perelshtein I, Tkachev M, Girshevitz O, Shpaisman H. Laser Printing of Multilayered Alternately Conducting and Insulating Microstructures. ACS Appl Mater Interfaces 2021; 13:36416-36425. [PMID: 34296861 PMCID: PMC8397236 DOI: 10.1021/acsami.1c06204] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Accepted: 07/12/2021] [Indexed: 05/19/2023]
Abstract
Production of multilayered microstructures composed of conducting and insulating materials is of great interest as they can be utilized as microelectronic components. Current proposed fabrication methods of these microstructures include top-down and bottom-up methods, each having their own set of drawbacks. Laser-based methods were shown to pattern various materials with micron/sub-micron resolution; however, multilayered structures demonstrating conducting/insulating/conducting properties were not yet realized. Here, we demonstrate laser printing of multilayered microstructures consisting of conducting platinum and insulating silicon oxide layers by a combination of thermally driven reactions with microbubble-assisted printing. PtCl2 dissolved in N-methyl-2-pyrrolidone (NMP) was used as a precursor to form conducting Pt layers, while tetraethyl orthosilicate dissolved in NMP formed insulating silicon oxide layers identified by Raman spectroscopy. We demonstrate control over the height of the insulating layer between ∼50 and 250 nm by varying the laser power and number of iterations. The resistivity of the silicon oxide layer at 0.5 V was 1.5 × 1011 Ωm. Other materials that we studied were found to be porous and prone to cracking, rendering them irrelevant as insulators. Finally, we show how microfluidics can enhance multilayered laser microprinting by quickly switching between precursors. The concepts presented here could provide new opportunities for simple fabrication of multilayered microelectronic devices.
Collapse
Affiliation(s)
- Eitan Edri
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Nina Armon
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Ehud Greenberg
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Shlomit Moshe-Tsurel
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Danielle Lubotzky
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Tommaso Salzillo
- Department
of Chemical and Biological Physics, Weizmann
Institute of Science, Rehovot 76100, Israel
| | - Ilana Perelshtein
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Maria Tkachev
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Olga Girshevitz
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| | - Hagay Shpaisman
- Department
of Chemistry, Bar-Ilan University, Ramat Gan 5290002, Israel
- Institute
of Nanotechnology and Advanced Materials (BINA), Bar-Ilan University, Ramat
Gan 5290002, Israel
| |
Collapse
|
5
|
Labbaf S, Ghanbar H, Stride E, Edirisinghe M. Preparation of multilayered polymeric structures using a novel four-needle coaxial electrohydrodynamic device. Macromol Rapid Commun 2014; 35:618-23. [PMID: 24510905 PMCID: PMC4237175 DOI: 10.1002/marc.201300777] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Revised: 01/05/2013] [Indexed: 01/12/2023]
Abstract
Coaxial four-needle electrohydrodynamic forming is applied for the first time to prepare layered structures in both particle and fiber form. Four different biocompatible polymers, polyethylene glycol, poly (lactic-co-glycolic acid), polycaprolactone, and polymethylsilsesquioxane, are used to generate four distinct layers confirmed using transmission and scanning electron microscopy combined with focused ion beam milling. The incorporation and release of different dyes within the polymeric system of four layers are demonstrated, something that is much desired in modern applications such as the polypill where multiple active pharmaceutical ingredients can be combined to treat numerous diseases.
Collapse
Affiliation(s)
- Sheyda Labbaf
- Department of Mechanical Engineering, Biomaterials Research Lab, University College London, Torrington Place, London, WC1 7JE, UK
| | | | | | | |
Collapse
|