Thermodynamic properties of the phosphate glass Dy(PO3)3 – Potential influence of boson peak on spin relaxation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F23%3A39920491" target="_blank" >RIV/00216275:25310/23:39920491 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S030488532301065X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S030488532301065X?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jmmm.2023.171415" target="_blank" >10.1016/j.jmmm.2023.171415</a>

Result language
angličtina
Original language name
Thermodynamic properties of the phosphate glass Dy(PO3)3 – Potential influence of boson peak on spin relaxation
Original language description
An experimental study was conducted to investigate the magnetic properties of dysprosium-doped phosphate glasses. Low-temperature (LT) measurements of thespecific heat of Dy(PO3)3 were performed in the range of 0.38–300 K in the magnetic fields up to 9 T. The LT specific heat of amorphous materials is characterized bythe presence of a broad maximum named boson peak (BP). The LT specific heat of the Dy-doped sample is dominated by the magnetic contribution, which overlapsthe BP. Due to that reason, the specific heat of Y(PO3)3 nonmagnetic glasses was also measured at the same temperature range, revealing the BP at 12–14 K.The magnetic susceptibility was measured from 1.8 K up to room temperature, yielding the effective magnetic moment of 10.65 μB, which is close to the theoreticalprediction for Dy3+. Magnetization curves were measured up to B = 5 T with temperatures ranging from 2 to 50 K.X-band electron-paramagnetic resonance spectra were measured from 0 to 1 T, revealing a maximum at 100 mT. The line achieves maximal intensity at temperaturesaround 12–14 K, which coincides with the appearance of BP in specific heat. The coincidence suggests the presence of the magnetoelastic coupling betweenthe ground quasi-doublet and boson peak.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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