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| Content Provider | Springer Nature Link |
|---|---|
| Author | Burck, A. Kempf, S. Schäfer, S. Rotzinger, H. Rodrigues, M. Wolf, T. Gastaldo, L. Fleischmann, A. Enss, C. |
| Copyright Year | 2008 |
| Abstract | In the last years metallic magnetic calorimeters (MMC) showed an energy resolution of a few eV for x-rays up to 10 keV. This makes MMCs a promising and powerful tool for many applications where photons or energetic massive particles have to be detected—like absolute activity measurements of radioactive isotopes, high resolution x-ray spectroscopy and x-ray fluorescence material analysis. However, in order to fulfill all requirements of these applications and to allow to reach the maximum resolving power a consequent micro-fabrication of the MMC detectors is needed. The micro-fabrication of metallic magnetic calorimeters requires reliable deposition and patterning processes for niobium structures with high critical currents and for paramagnetic sensors.As one result of our advances in microstructuring a fully microfabricated MMC which consists of a meander shaped niobium thin film pickup coil and a 3 μm thick sputter deposited paramagnetic Au:Er temperature sensor will be presented. Deposition of energy in the paramagnetic sensor causes a rise in temperature and results in a change of magnetization, which is measured by a low noise high bandwidth dc-SQUID. The sputter deposited Au:Er films we report on are working well and show thermodynamic properties close to the ones known from bulk material down to temperatures of 45 mK. |
| Starting Page | 337 |
| Ending Page | 344 |
| Page Count | 8 |
| File Format | |
| ISSN | 00222291 |
| Journal | Journal of Low Temperature Physics |
| Volume Number | 151 |
| Issue Number | 1-2 |
| e-ISSN | 15737357 |
| Language | English |
| Publisher | Springer US |
| Publisher Date | 2008-01-26 |
| Publisher Place | Boston |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | MMC Metallic magnetic calorimeter Low temperature detectors Rare earth alloys Gold-erbium alloy X-ray spectroscopy Cryogenics; refrigerators, low-temperature detectors, and other low-temperature equipment X- and ?-ray sources, mirrors, gratings, and detectors X-ray and ?-ray spectrometers X- and ?-ray spectroscopy Superconducting quantum interference devices Superconducting optical, X-ray, and ?-ray detectors Diamagnetism, paramagnetism, and superparamagnetism Metals and alloys Magnetism, Magnetic Materials Characterization and Evaluation of Materials Condensed Matter |
| Content Type | Text |
| Resource Type | Article |
| Subject | Atomic and Molecular Physics, and Optics Condensed Matter Physics Materials Science |
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