dc.contributor.author | Y Fujii | |
dc.contributor.author | T Asano | |
dc.contributor.author | S Vasiliev | |
dc.contributor.author | S Miura | |
dc.contributor.author | A Fukuda | |
dc.contributor.author | Y Ishikawa | |
dc.contributor.author | H Kikuchi | |
dc.contributor.author | H Yamamori | |
dc.contributor.author | T Mizusaki | |
dc.contributor.author | S Lee | |
dc.contributor.author | K Ohya | |
dc.contributor.author | S Mitsudo | |
dc.contributor.author | A Matsubara | |
dc.date.accessioned | 2022-10-27T11:45:25Z | |
dc.date.available | 2022-10-27T11:45:25Z | |
dc.identifier.issn | 1742-6588 | |
dc.identifier.uri | https://www.utupub.fi/handle/10024/155015 | |
dc.description.abstract | <p>We have developed a millimeter-wave electron-spin-resonance (ESR) system for very low temperatures (<i>T</i>
< 1 K) that can be employed for nuclear-magnetic-resonance
measurements by using dynamic nuclear polarization. The system uses a
Fabry-Pérot resonator that works in the frequency range of 125 – 130 GHz
and covers the temperature range of 0.09 – 6.5 K. We have performed ESR
measurements in the frequency around 128 GHz by using Mn<i> <sub>x</sub> </i>Mg<sub>1-<i>x</i> </sub>O (<i>x</i> = 1.0 <b>×</b> 10<sup>-4</sup>)
and free-radical samples of 1, 1-diphenyl-2-picrylhydrazyl (DPPH),
because these samples have been proposed as field and sensitivity
markers. Temperature dependence of the ESR signal intensity for Mn<i> <sub>x</sub> </i>Mg<sub>1-<i>x</i> </sub>O
shows anomalies originating from magnetic order are found around 3.5 – 4
K. We estimate the sensitivity of the system for ESR detections to be 6
<b>×</b> 10<sup>13</sup> spins/G at 5.8 K. Because DPPH shows no
observable shift in the magnetic field, we propose it as a useful
standard marker for ESR measurements at very low temperatures.</p> | |
dc.language.iso | en | |
dc.title | High-frequency electron-spin-resonance measurements on Mn x Mg1-xO (x = 1.0×10-4) and DPPH at very low temperatures | |
dc.identifier.urn | URN:NBN:fi-fe2021042719356 | |
dc.relation.volume | 1 | |
dc.relation.volume | 969 | |
dc.contributor.organization | fi=Wihurin fysiikantutkimuslaboratorio|en=Wihuri Physical Laboratory| | |
dc.contributor.organization-code | 2606701 | |
dc.converis.publication-id | 32080607 | |
dc.converis.url | https://research.utu.fi/converis/portal/Publication/32080607 | |
dc.identifier.jour-issn | 1742-6588 | |
dc.okm.affiliatedauthor | Vasiliev, Sergey | |
dc.okm.discipline | 114 Physical sciences | en_GB |
dc.okm.discipline | 114 Fysiikka | fi_FI |
dc.okm.internationalcopublication | international co-publication | |
dc.okm.internationality | International publication | |
dc.okm.type | Conference proceedings article | |
dc.publisher.country | United Kingdom | en_GB |
dc.publisher.country | Britannia | fi_FI |
dc.publisher.country-code | GB | |
dc.relation.conference | International Conference on Low Temperature Physics | |
dc.relation.doi | 10.1088/1742-6596/969/1/012111 | |
dc.relation.ispartofjournal | Journal of Physics: Conference Series | |
dc.title.book | 28th International Conference on Low Temperature Physics (LT28) 9–16 August 2017, Gothenburg, Sweden | |
dc.year.issued | 2018 | |