Spin relaxation in 3Zn(PO3)(2). 2Mn(PO3)(2) phosphate glass - The role of low-energy vibrational modes
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F21%3A39916492" target="_blank" >RIV/00216275:25310/21:39916492 - isvavai.cz</a>
Výsledek na webu
<a href="https://www.sciencedirect.com/science/article/pii/S0925838820332746?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0925838820332746?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jallcom.2020.156910" target="_blank" >10.1016/j.jallcom.2020.156910</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Spin relaxation in 3Zn(PO3)(2). 2Mn(PO3)(2) phosphate glass - The role of low-energy vibrational modes
Popis výsledku v původním jazyce
Thermodynamic and magnetic properties of 3Zn(PO3)(2)center dot 2Mn(PO3)(2) phosphate glass at wide temperature and magnetic field range were investigated. The study of static magnetic susceptibility and specific heat ruled out the formation of a spin glass state down to 0.41 K. Short-range order in the magnetic subsystem can be approximated by S = 5/2 antiferromagnetic dimers with weak uniaxial anisotropy. The results of alternating susceptibility studies revealed that below 10 K temperature-independent process dominates, which was ascribed to cross-tunneling relaxation. In contrast, thermally activated relaxation found at higher temperatures was identified as the Raman process. The analysis of the boson peak in lattice specific heat and thermal conductivity using soft potential model yielded the estimation of loffe-Riegel crossover (h) over bar omega(IR)/k(B) = 25.8K. Short-wavelength phonons with frequencies higher than omega(IR) are proposed to mediate Raman relaxation, whereas acoustic phonons remain inactive. (C) 2020 Elsevier B.V. All rights reserved.
Název v anglickém jazyce
Spin relaxation in 3Zn(PO3)(2). 2Mn(PO3)(2) phosphate glass - The role of low-energy vibrational modes
Popis výsledku anglicky
Thermodynamic and magnetic properties of 3Zn(PO3)(2)center dot 2Mn(PO3)(2) phosphate glass at wide temperature and magnetic field range were investigated. The study of static magnetic susceptibility and specific heat ruled out the formation of a spin glass state down to 0.41 K. Short-range order in the magnetic subsystem can be approximated by S = 5/2 antiferromagnetic dimers with weak uniaxial anisotropy. The results of alternating susceptibility studies revealed that below 10 K temperature-independent process dominates, which was ascribed to cross-tunneling relaxation. In contrast, thermally activated relaxation found at higher temperatures was identified as the Raman process. The analysis of the boson peak in lattice specific heat and thermal conductivity using soft potential model yielded the estimation of loffe-Riegel crossover (h) over bar omega(IR)/k(B) = 25.8K. Short-wavelength phonons with frequencies higher than omega(IR) are proposed to mediate Raman relaxation, whereas acoustic phonons remain inactive. (C) 2020 Elsevier B.V. All rights reserved.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10402 - Inorganic and nuclear chemistry
Návaznosti výsledku
Projekt
—
Návaznosti
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
—
Svazek periodika
851
Číslo periodika v rámci svazku
January
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
9
Strana od-do
156910
Kód UT WoS článku
000579868900119
EID výsledku v databázi Scopus
2-s2.0-85090246182