Výsledky vyhledávání - "S. Farokhipoor"

Akademický článek

Large magnetoelectric coupling in multiferroic oxide heterostructures assembled via epitaxial lift-off

Autor: D. Pesquera, E. Khestanova, M. Ghidini, S. Zhang, A. P. Rooney, F. Maccherozzi, P. Riego, S. Farokhipoor, J. Kim, X. Moya, M. E. Vickers, N. A. Stelmashenko, S. J. Haigh, S. S. Dhesi, N. D. Mathur

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)

Key properties of transition metal perovskite oxides are degraded after epitaxial growth on ferroelectric substrates due to lattice-mismatch strain. Here, the authors use epitaxial lift-off and transfer to overcome this problem and demonstrate electr

Externí odkaz: https://doaj.org/article/d326a7d2ba8446c8978bd0470b986589

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Akademický článek

Screening effects in ferroelectric resistive switching of BiFeO3 thin films

Autor: S. Farokhipoor, B. Noheda

Publikováno v: APL Materials, Vol 2, Iss 5, Pp 056102-056102-6 (2014)

We investigate ferroelectric resistive switching in BiFeO3 thin films by performing local conductivity measurements. By comparing conduction characteristics at artificially up-polarized domains with those at as-grown down-polarized domains, the chang

Externí odkaz: https://doaj.org/article/a0cf67d6ae134e47886e093ce7ff0519

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Patterning enhanced tetragonality in BiFeO3 thin films with effective negative pressure by helium implantation

Autor: Pierre Fertey, Vincent Garcia, Jean-Nicolas Audinot, E. Elkaim, Jens Kreisel, S. Farokhipoor, I. Peral Alonso, Lluís Yedra, F. Carla, Tom Wirtz, J. Fischer, Mael Guennou, Beatriz Noheda, Amélie Jarnac, Constance Toulouse, Stéphane Fusil

Publikováno v: Physical Review Materials. 5

Helium implantation in epitaxial thin films is a way to control the out-of-plane deformation independently from the in-plane strain controlled by epitaxy. In particular, implantation by means of a helium microscope allows for local implantation and p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ff6af146d9e247be76cd85ba733354f2
https://doi.org/10.1103/physrevmaterials.5.024404

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Novel Phases at Domain Walls

Autor: S. Farokhipoor, César Magén, Beatriz Noheda, Diego Rubi

Publikováno v: Domain Walls

This chapter discusses how the intense stress fields generated at the ferroelastic domain walls in some epitaxially strained oxide layers introduce selective chemical modifications. This gives rise to novel 2D crystal structures at the walls. The cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c50febec25575b0c760f4067fa214628
https://doi.org/10.1093/oso/9780198862499.003.0002

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Voltage-driven displacement of magnetic vortex cores

Autor: N. D. Mathur, Sarnjeet S. Dhesi, David Pesquera, Bhaskaran Nair, Russell P. Cowburn, Massimo Ghidini, R. Pellicelli, Xavier Moya, Francesco Maccherozzi, Rhodri Mansell, S. Farokhipoor, Crispin H. W. Barnes

Magnetic vortex cores in polycrystalline Ni discs underwent non-volatile displacements due to voltage-driven ferroelectric domain switching in single-crystal BaTiO3. This behaviour was observed using photoemission electron microscopy to image both th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f9d5917dc0b7346ee45db19d1a5c740a

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Large magnetoelectric coupling in multiferroic oxide heterostructures assembled via epitaxial lift-off

Autor: Francesco Maccherozzi, Patricia Riego, Sarnjeet S. Dhesi, Nadia A. Stelmashenko, Xavier Moya, S. Farokhipoor, David Pesquera, Jihoon Kim, Sarah J. Haigh, Mary E. Vickers, Ekaterina Khestanova, Neil D. Mathur, Sen Zhang, Massimo Ghidini, A. P. Rooney

Publikováno v: Addi. Archivo Digital para la Docencia y la Investigación
instname
Addi: Archivo Digital para la Docencia y la Investigación
Universidad del País Vasco
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Nature Communications

Epitaxial films may be released from growth substrates and transferred to structurally and chemically incompatible substrates, but epitaxial films of transition metal perovskite oxides have not been transferred to electroactive substrates for voltage

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::252e30517be250817ba51aca73629178
https://www.repository.cam.ac.uk/handle/1810/324340

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Tunable resistivity exponents in the metallic phase of epitaxial nickelates

Autor: Qikai Guo, Francisco Rivadulla, Beatriz Noheda, César Magén, S. Farokhipoor

Publikováno v: Zaguán: Repositorio Digital de la Universidad de Zaragoza
Universidad de Zaragoza
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Zaguán. Repositorio Digital de la Universidad de Zaragoza
Consejo Superior de Investigaciones Científicas (CSIC)
Nature Communications, 2949:2949 (2020). Nature Publishing Group
Digital.CSIC. Repositorio Institucional del CSIC
instname

We report a detailed analysis of the electrical resistivity exponent of thin films of NdNiO3 as a function of epitaxial strain. Thin films under low strain conditions show a linear dependence of the resistivity versus temperature, consistent with a c

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::030dcf98aa33d532eae0ea0030a51595
https://research.rug.nl/en/publications/f1ac4222-3b85-4543-b8a0-9ff956dc2ba4

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Voltage-driven annihilation and creation of magnetic vortices in Ni discs

Autor: B. Nair, Neil D. Mathur, David Pesquera, Massimo Ghidini, Russell P. Cowburn, Xavier Moya, Rhodri Mansell, R. Pellicelli, Crispin H. W. Barnes, Sarnjeet S. Dhesi, S. Farokhipoor, Francesco Maccherozzi

Publikováno v: Nanoscale. 12(9)

Using photoemission electron microscopy (PEEM) to image ferromagnetism in polycrystalline Ni disks, and ferroelectricity in their single-crystal BaTiO3 substrates, we find that voltage-driven 90° ferroelectric domain switching serves to reversibly a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e8d26ee04ccf094bb15abfe88a8050e2
https://pubmed.ncbi.nlm.nih.gov/32101212

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Domain Walls in Multiferroic Materials and Their Functional Properties

Autor: S. Farokhipoor

Publikováno v: Oxide Spintronics ISBN: 9780429468193

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e66a3e7bae495e6b4799c185f7778b86
https://doi.org/10.1201/9780429468193-5

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Local deformation gradients in epitaxial Pb(Zr 0.2 Ti 0.8 )O 3 layers investigated by transmission electron microscopy

Autor: S. Farokhipoor, Martin Hÿtch, Etienne Snoeck, N Wollschläger, Arnoud Everhardt, Thibaud Denneulin, Beatriz Noheda

Publikováno v: Journal of Physics: Condensed Matter
Journal of Physics: Condensed Matter, 2018, 30 (21), ⟨10.1088/1361-648X/aabd00⟩
Journal of Physics: Condensed Matter, IOP Publishing, 2018, 30 (21), ⟨10.1088/1361-648X/aabd00⟩
Journal of Physics-Condensed Matter, 30(21):215701. IOP PUBLISHING LTD

Lead zirconate titanate samples are used for their piezoelectric and ferroelectric properties in various types of micro-devices. Epitaxial layers of tetragonal perovskites have a tendency to relax by forming [Formula: see text] ferroelastic domains.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::933f73817161cd4269ef678141a6b3e2
https://hal.science/hal-01838701

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