Superconductivity of the Ga-Ag Eutectic Alloy Under Nanoconfinement
- 1St. Petersburg State University, Research Park, 199034 St. Petersburg, Russia
- 2Physics Faculty, St. Petersburg State University, 199034 St. Petersburg, Russia
- 3Ioffe Physical-Technical Institute, Russian Academy of Sciences, 194021 St. Petersburg, Russia
Abstract
Gallium alloys are a major focus of modern research due to their applications in emerging fields such as microelectronics, soft robotics, wearable devices, and biotechnology. We present an investigation into the effects of nanoconfinement on superconductivity in a Ga-Ag alloy with a composition close to the eutectic point on the gallium-rich side. Magnetization measurements were carried out within a temperature range of 1.8 to 10 K for two nanocomposites based on synthetic opal and porous glass matrices loaded with Ga-Ag. Superconducting transitions were observed at temperatures significantly higher than the critical temperature of bulk gallium, allowing us to construct the corresponding superconducting phase diagrams. Furthermore, superconductivity was found to coexist with ferromagnetism, the appearance of which is ascribed to the interface between gallium and Ag3Ga2 segregates. The ferromagnetism induces a shift between the branches of the magnetization isotherms. Finally, a thermal hysteresis was observed between the temperature-dependent magnetization curves measured under field-cooled cooling (FCC) and field-cooled warming (FCW) protocols.
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BibTeX
@article{likholetova2026superconductivity,
title = {{Superconductivity of the Ga-Ag Eutectic Alloy Under Nanoconfinement}},
author = {Marina V. Likholetova and Elena V. Charnaya and Igor A. Kasatkin and Yurii A. Kumzerov and Alexander V. Fokin},
journal = {Nanomaterials},
year = {2026},
month = nov,
doi = {10.3390/nano16211444},
url = {https://www.mdpi.com/2079-4991/16/21/1444},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Superconductivity of the Ga-Ag Eutectic Alloy Under Nanoconfinement
AU - Marina V. Likholetova
AU - Elena V. Charnaya
AU - Igor A. Kasatkin
AU - Yurii A. Kumzerov
AU - Alexander V. Fokin
PY - 2026
DA - 2026/11/08
JO - Nanomaterials
DO - 10.3390/nano16211444
UR - https://www.mdpi.com/2079-4991/16/21/1444
AB - Gallium alloys are a major focus of modern research due to their applications in emerging fields such as microelectronics, soft robotics, wearable devices, and biotechnology. We present an investigation into the effects of nanoconfinement on superconductivity in a Ga-Ag alloy with a composition close to the eutectic point on the gallium-rich side. Magnetization measurements were carried out within a temperature range of 1.8 to 10 K for two nanocomposites based on synthetic opal and porous glass matrices loaded with Ga-Ag. Superconducting transitions were observed at temperatures significantly higher than the critical temperature of bulk gallium, allowing us to construct the corresponding superconducting phase diagrams. Furthermore, superconductivity was found to coexist with ferromagnetism, the appearance of which is ascribed to the interface between gallium and Ag3Ga2 segregates. The ferromagnetism induces a shift between the branches of the magnetization isotherms. Finally, a thermal hysteresis was observed between the temperature-dependent magnetization curves measured under field-cooled cooling (FCC) and field-cooled warming (FCW) protocols.
SN - 2079-4991
ER -