Jonctiuni multiferoice memristive (MMs)


Project Director: Dr. Bogdana BORCA

Elementele versatile multi-nivel memristive bazate pe jonctiuni tunel multiferoice au proprietati remarcabile determinate de posibilitatea modularii curentului electric prin jonctiune controland independent orientarea magnetizarii electrozilor feromagnetici si a polarizarii feroelectrice a barierei tunel. Cuplajul acestor proprietati magneto-electrice este unul dintre cele mai active campuri de cercetare in stiinta materialelor, deschizand un larg spectru de applicatii technologice de la memorii non-volatile, la elemente in circuitele logice, dispositive de detectie–senzori, de stocare de energie, modele ale sinapselor biologice in domeniul emergent al ingineriei neuromorfice si al inteligentei artificiale. Aici vom demonstra functionarea starile sprintronice multi-memristive ale jonctiunilor tunel multiferoice ca elemente cu doua terminale compuse dintr-o bariera tunel nanoscopica constand intr-un film organic feroelectric si pentru prima data compus din bio-molecule, intercalat intre doi electrozi magnetici diferiti din aliaje Heusler. Realizarea acestor stari rezistive – o tranzitie de la TRL2 la nivelul TRL3 – vor fi controlate prin dependenta curentului de tunelare prin aceste heterostructuri de polarizarea electrica a filmului feroelectric (electrorezistenta de tunelare) si de orientarea relativa a magnetizarii electrozilor magnetici (magnetorezistenta de tunelare). Mai mult, o influenta reciproca intre proprietatile electrice si magnetice poate fi realizata prin controlul cuplajului magneto-electric la interfete, folosind efectele multifunctionale associate variatiilor termice si mecanice, adica efectele piro- si piezo-electrice ale feroelectricilor si efectele magneto-calorice, magneto-strictive si de puternica polarizare in spin a compusilor alesi ca material pentru electrozii magnetici.

Dr. Bogdana Borca -director de proiect

Dr. Victor Kuncser

Dr. Marcela Socol

Dr. Lucian Trupina

Dr. Gabriel Schinteie

Dr. Mihaela Sofronie

Dr. Cristina Chirila

Dr. Nicusor Iacob

Dr. Claudiu Locovei

Eng. Aurel Leca

Prezentari:

  •  7th edition of the International Workshop of Materials Physics (Magurele, Romania, August 31-st 2022, prezentare orala)

B. Borca "Memristive effects in multiferroic metal-organic heterostructures"

https://infim.ro/event/7th-edition-of-the-international-workshop-of-materials-physics-first-announcement-2022/

  •  Physics of Interfaces and Nanomaterials, University of Twente (Enschede, Netherlands, November 18-th 2022, seminar invitat)

B. Borca "Artificial memory element consisting of guanine nucleobase"

  •   21-st International Balkan Workchop on Applied Physics and Materials Science -IBWAP 2023 (Constanța, Romania, July 12-th 2023, prezentare orala)

https://ibwap.ro/

B. Borca "Memristive spin-valves based on guanine nucleobase"

  •  13-th Joint European Magnetic Symposia JEMS 2023 (Madrid, Spain, September 1-st 2023, prezentare orala)

https://www.jems2023.es/

B. Borca "Multiferroic metal-organic heterostructures with memristive properties"

  •  E-MRS 2024 Spring Meeting of the European Materials Research Society (Strasbourg, France, May 30-th 2024, prezentare orala) 

https://www.european-mrs.com/progress-unconventional-electronics-and-sustainable-flexible-sensing-technologies-emrs

B.Borca "Spin rectification effect in multiferroic metal-organic heterojuctions"

  • EUROINVENT Expo Proceedings (Iasi, Romania, June 6-th - 8-th 2024, poster-premiat Medalie de Argint)

https://www.euroinvent.org/cat/EUROINVENT_2024.pdf

B. Borca et al. "Top-electrode deposition process in vertical organic junctions"

  • a se desfasura: 10-th International Conference on Advanced Materials (Bucharest, Romania, July 15-th 2024, prezentare orala)

https://rocam.fizica.unibuc.ro/ROCAM/

B. Borca "Advanced method for amino acid recognition within peptide sequences"

 

Publicatii:

  • Sisteme magnetice publicatie in Coatings 12(9), 1366 (2022)

A.E. Stanciu et al. "Magnetic Properties of Nanosized Fe and FeCo Systems on Trenched Mo Templates"                               https://doi.org/10.3390/coatings12091366

  • Nanosisteme-editorial, publicatie in Coatings 12(8), 1138 (2022)

B. Borca & C. Bartha, "Advances of Nanoparticles and Thin Films"

https://doi.org/10.3390/coatings12081138

  • Sisteme magnetice, publicatie in Materials 15(22), 8003 (2022)

M. Oumezzine et al. "Magnetocaloric and Giant Magnetoresistance Effects in La-Ba-Mn-Ti-O Epitaxial Thin Films:    Influence of Phase Transition and Magnetic Anisotropy" 

https://doi.org/10.3390/ma15228003

  • Sisteme organice, publicatie in J. Phys. Chem. Lett. 14(8), 2072 (2023)

B. Borca et al. "Chiral and Catalytic Effects of Site-Specific Molecular Adsorption" 

https://doi.org/10.1021/acs.jpclett.2c03575

  • Sisteme biomoleculare, publicatie in Nature Communications 14, 8335 (2023)

X. Wu=, B. Borca= et al. "Molecular sensitised probe for amino acid recognition within peptide sequences"

https://doi.org/10.1038/s41467-023-43844-5

  • Review - jonctiuni organice multiferoice, publicatie in Coatings 14(6), 682 (2024)

B. Borca "Advances in Organic Multiferroic Junctions"

https://doi.org/10.3390/coatings14060682

 

 

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