Novel diamagnetic garnet-type substrate single crystals for yttrium iron garnet Y3Fe5O12 films with ultralow-damping at cryogenic temperatures
4 affiliations
- 1Leibniz-Institut für Kristallzüchtung, Max-Born-Str. 2, Berlin, 12489, Germany
- 2INNOVENT e.V. Technologieentwicklung, Prüssingstr. 27B, Jena, 07745, Germany
- 3University of Vienna, Faculty of Physics, Boltzmanngasse 5, Vienna, 1090, Austria
- 4University of Vienna, Vienna Doctoral School in Physics, Boltzmanngasse 5, Vienna, 1090, Austria
Abstract
Yttrium scandium gallium aluminum garnet (YSGAG) solid solution single crystals with diameters up to 30 mm and total lengths up to about 100 mm were grown by the conventional Czochralski technique. It is shown that the pseudo-binary Y 3 Sc 2 Ga 3 O 12 -Y 3 Sc 2 Al 3 O 12 and Y 3 Sc 2 Ga 3 O 12 -Y 3 Al 5 O 12 systems are suitable for obtaining YSGAG crystals with tailored lattice parameters in the range from 12.3621 to 12.4262 Å, which are close to the lattice parameters of the most well-known representatives of the iron garnet microwave ferrite family, such as Y 3 Fe 5 O 12 (YIG). Rocking curve measurements on the completely diamagnetic YSGAG substrate crystals revealed typical FWHM values of about 22 arcsec, which is indicative of relatively high structural quality for a solid-solution crystal. Single crystalline YIG films with thicknesses between 100 nm and 2.9 μm were successfully grown on nearly lattice matched, epi-polished YSGAG substrates using liquid phase epitaxy (LPE). Magnetic and microwave measurements at room temperature reveal that the films exhibit low saturation fields, very low remanence, and narrow FMR linewidths. Furthermore, initial studies confirm that even the very first films on non-optimized diamagnetic YSGAG substrates at temperatures below 10 K outperform conventional YIG films on paramagnetic Gd 3 Ga 5 O 12 (GGG) substrates, since the linewidth of the ferromagnetic resonance (FMR) at cryogenic temperatures is not affected by interactions with the substrate material. Therefore, the novel diamagnetic substrates are better suited for microwave applications at low temperature, as excessive damping losses induced by paramagnetic substrates can be avoided. This opens the way for the development of miniaturized microwave components for application in quantum magnonics, such as hybrid-integrated quantum systems based on ultralow-damping YIG films that can operate efficiently at temperatures in the millikelvin range.
Related
- Single-molecule cold chemistry: Isotopic branching ratios of the H2O+ + HD reaction at cryogenic temperatures
- Infrared free electron laser induced photodesorption of CO and N₂ from solid amorphous water at cryogenic temperatures
- Ice Deposition of Water Secondary Ion Mass Spectrometry at Cryogenic Temperatures
- Substrate-Dependent Cryogenic and UV Performance of AlGaN/AlN/GaN HEMTs and Photodetectors
- Mass-Constrained Integration of Cryogenic Propellant Management and Carbon–Hydrogen–Oxygen Resource Recovery for Mars Surface Depots: A Monte Carlo Feasibility Study
BibTeX
@article{guguschev2026novel,
title = {{Novel diamagnetic garnet-type substrate single crystals for yttrium iron garnet Y3Fe5O12 films with ultralow-damping at cryogenic temperatures}},
author = {Christo Guguschev and Carsten Dubs and Roberts Blukis and A. B. Surzhenko and Mario Brützam and R. Koc and C. Rhode and K. Berger and C. Richter and C. Berryman and R.O. Serha and A.V. Chumak},
journal = {Materials Today Chemistry},
year = {2026},
month = oct,
doi = {10.1016/j.mtchem.2026.104092},
url = {https://doi.org/10.1016/j.mtchem.2026.104092},
note = {CC BY-NC-ND},
}
RIS
TY - JOUR
TI - Novel diamagnetic garnet-type substrate single crystals for yttrium iron garnet Y3Fe5O12 films with ultralow-damping at cryogenic temperatures
AU - Christo Guguschev
AU - Carsten Dubs
AU - Roberts Blukis
AU - A. B. Surzhenko
AU - Mario Brützam
AU - R. Koc
AU - C. Rhode
AU - K. Berger
AU - C. Richter
AU - C. Berryman
AU - R.O. Serha
AU - A.V. Chumak
PY - 2026
DA - 2026/10/12
JO - Materials Today Chemistry
DO - 10.1016/j.mtchem.2026.104092
UR - https://doi.org/10.1016/j.mtchem.2026.104092
AB - Yttrium scandium gallium aluminum garnet (YSGAG) solid solution single crystals with diameters up to 30 mm and total lengths up to about 100 mm were grown by the conventional Czochralski technique. It is shown that the pseudo-binary Y 3 Sc 2 Ga 3 O 12 -Y 3 Sc 2 Al 3 O 12 and Y 3 Sc 2 Ga 3 O 12 -Y 3 Al 5 O 12 systems are suitable for obtaining YSGAG crystals with tailored lattice parameters in the range from 12.3621 to 12.4262 Å, which are close to the lattice parameters of the most well-known representatives of the iron garnet microwave ferrite family, such as Y 3 Fe 5 O 12 (YIG). Rocking curve measurements on the completely diamagnetic YSGAG substrate crystals revealed typical FWHM values of about 22 arcsec, which is indicative of relatively high structural quality for a solid-solution crystal. Single crystalline YIG films with thicknesses between 100 nm and 2.9 μm were successfully grown on nearly lattice matched, epi-polished YSGAG substrates using liquid phase epitaxy (LPE). Magnetic and microwave measurements at room temperature reveal that the films exhibit low saturation fields, very low remanence, and narrow FMR linewidths. Furthermore, initial studies confirm that even the very first films on non-optimized diamagnetic YSGAG substrates at temperatures below 10 K outperform conventional YIG films on paramagnetic Gd 3 Ga 5 O 12 (GGG) substrates, since the linewidth of the ferromagnetic resonance (FMR) at cryogenic temperatures is not affected by interactions with the substrate material. Therefore, the novel diamagnetic substrates are better suited for microwave applications at low temperature, as excessive damping losses induced by paramagnetic substrates can be avoided. This opens the way for the development of miniaturized microwave components for application in quantum magnonics, such as hybrid-integrated quantum systems based on ultralow-damping YIG films that can operate efficiently at temperatures in the millikelvin range.
SN - 2468-5194
ER -