@article{bb4604c64931443d8231bd0e1b804033,
title = "Application of a Microfabricated Microwave Resonator in a Co-Pd-Based Magnetic Hydrogen-Gas Sensor",
abstract = "We investigate the ferromagnetic resonance (FMR) response of microfabricated microwave resonators loaded with small Co16Pd84 alloy rectangles. A major increase in the FMR signal-to-noise ratio is achieved by employing the microwave-resonator structure. A FMR peak shift similar to that of Co16Pd84 continuous films is measured in the presence of hydrogen gas in the sample environment. We show that the very high sensitivity of the FMR signal of the Co16Pd84 alloy rectangle to hydrogen exposure can be used to measure relatively small hydrogen-concentration steps near 100% H2. Additionally, we also demonstrate that this structure can measure hydrogen over a concentration range from 3% to 100% H2 in N2. In time-dependent FMR measurements, we discover a temperature dependence of the FMR signal, which we relate to intrinsic temperature-dependent changes in saturation magnetization and the magnetic anisotropy of the Co-Pd alloy.",
author = "Schefer, {Thomas A.} and Ryszard Narkowicz and Kilian Lenz and Fabian Ganss and Roberts, {Malcolm P.} and Olav Hellwig and Mariusz Martyniuk and J{\"u}rgen Lindner and Mikhail Kostylev",
note = "Funding Information: The authors would like to thank the Research Collaboration Award from The University of Western Australia. They would also like to thank the facilities and the scientific and technical assistance of the Australian National Fabrication Facility, Centre for Microscopy, Characterisation, and Analysis, The University of Western Australia, a facility funded by the University, State, and Commonwealth Governments. Support by the Nanofabrication Facilities Rossendorf (NanoFaRo) at the Ion Beam Center of HZDR is gratefully acknowledged. The work of Thomas A. Schefer is supported by the Robert and Maude Gledden Postgraduate Scholarship. Publisher Copyright: {\textcopyright} 2022 American Physical Society. ",
year = "2022",
month = aug,
doi = "10.1103/PhysRevApplied.18.024015",
language = "English",
volume = "18",
journal = "Physical Review Applied",
issn = "2331-7019",
publisher = "American Physical Society",
number = "2",
}