Ferromagnetism and Superconductivity in CaRuO3/YBa2Cu3O7-δ Heterostructures

Alina Marinela Ionescu; Ion Ivan; Claudiu Locovei; Melania Onea; Adrian Crisan; Soltan Soltan; Gisela Schütz; Joachim Albrecht

doi:10.3390/ma15072345

Ferromagnetism and Superconductivity in CaRuO₃/YBa₂Cu₃O_7-δ Heterostructures

Alina Marinela Ionescu, Ion Ivan, Claudiu Locovei, Melania Onea, Adrian Crisan, Soltan Soltan, Gisela Schütz, Joachim Albrecht

Research output: Contribution to journal › Article › peer-review

Abstract

The deposition of a ferromagnetic layer can affect the properties of high-temperature superconductors underneath. We investigated the influence of ferromagnetic CaRuO₃ on the properties of YBa₂Cu₃O_7-x (YBCO) superconducting thin films when the layers are either in direct contact or separated by a barrier layer of 5 nm SrTiO₃. Detailed measurements of the magnetic moment of the superconductor and ferromagnet as a function of temperature and magnetic field have been performed using SQUID magnetometry. Magnetometry and relaxation measurements show that the modification of the superconducting properties of YBCO strongly depends on the interaction with the ferromagnetic layer on top. The barrier layer has a significant impact on both the superconducting properties of the YBCO film and the ferromagnetic ordering of CaRuO₃. The physical properties mentioned above were discussed in correlation with the materials’ structure determined by XRD analysis.

Original language	English
Article number	2345
Journal	Materials
Volume	15
Issue number	7
DOIs	https://doi.org/10.3390/ma15072345
State	Published - 1 Apr 2022
Externally published	Yes

Keywords

critical temperature
SQUID magnetometry
superconductor-ferromagnetic heterostructures

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title = "Ferromagnetism and Superconductivity in CaRuO3/YBa2Cu3O7-δ Heterostructures",

abstract = "The deposition of a ferromagnetic layer can affect the properties of high-temperature superconductors underneath. We investigated the influence of ferromagnetic CaRuO3 on the properties of YBa2Cu3O7-x (YBCO) superconducting thin films when the layers are either in direct contact or separated by a barrier layer of 5 nm SrTiO3. Detailed measurements of the magnetic moment of the superconductor and ferromagnet as a function of temperature and magnetic field have been performed using SQUID magnetometry. Magnetometry and relaxation measurements show that the modification of the superconducting properties of YBCO strongly depends on the interaction with the ferromagnetic layer on top. The barrier layer has a significant impact on both the superconducting properties of the YBCO film and the ferromagnetic ordering of CaRuO3. The physical properties mentioned above were discussed in correlation with the materials{\textquoteright} structure determined by XRD analysis.",

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AU - Ionescu, Alina Marinela

AU - Ivan, Ion

AU - Locovei, Claudiu

AU - Onea, Melania

AU - Crisan, Adrian

AU - Soltan, Soltan

AU - Schütz, Gisela

AU - Albrecht, Joachim

PY - 2022/4/1

Y1 - 2022/4/1

N2 - The deposition of a ferromagnetic layer can affect the properties of high-temperature superconductors underneath. We investigated the influence of ferromagnetic CaRuO3 on the properties of YBa2Cu3O7-x (YBCO) superconducting thin films when the layers are either in direct contact or separated by a barrier layer of 5 nm SrTiO3. Detailed measurements of the magnetic moment of the superconductor and ferromagnet as a function of temperature and magnetic field have been performed using SQUID magnetometry. Magnetometry and relaxation measurements show that the modification of the superconducting properties of YBCO strongly depends on the interaction with the ferromagnetic layer on top. The barrier layer has a significant impact on both the superconducting properties of the YBCO film and the ferromagnetic ordering of CaRuO3. The physical properties mentioned above were discussed in correlation with the materials’ structure determined by XRD analysis.

AB - The deposition of a ferromagnetic layer can affect the properties of high-temperature superconductors underneath. We investigated the influence of ferromagnetic CaRuO3 on the properties of YBa2Cu3O7-x (YBCO) superconducting thin films when the layers are either in direct contact or separated by a barrier layer of 5 nm SrTiO3. Detailed measurements of the magnetic moment of the superconductor and ferromagnet as a function of temperature and magnetic field have been performed using SQUID magnetometry. Magnetometry and relaxation measurements show that the modification of the superconducting properties of YBCO strongly depends on the interaction with the ferromagnetic layer on top. The barrier layer has a significant impact on both the superconducting properties of the YBCO film and the ferromagnetic ordering of CaRuO3. The physical properties mentioned above were discussed in correlation with the materials’ structure determined by XRD analysis.

KW - critical temperature

KW - SQUID magnetometry

KW - superconductor-ferromagnetic heterostructures

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ER -

Ferromagnetism and Superconductivity in CaRuO₃/YBa₂Cu₃O_7-δ Heterostructures

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Keywords

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