Spin relaxation in 3Zn(PO3)(2). 2Mn(PO3)(2) phosphate glass - The role of low-energy vibrational modes
The result's identifiers
Result code in 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>
Result on the web
<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>
Alternative languages
Result language
angličtina
Original language name
Spin relaxation in 3Zn(PO3)(2). 2Mn(PO3)(2) phosphate glass - The role of low-energy vibrational modes
Original language description
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.
Czech name
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Czech description
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Classification
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
10402 - Inorganic and nuclear chemistry
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Alloys and Compounds
ISSN
0925-8388
e-ISSN
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Volume of the periodical
851
Issue of the periodical within the volume
January
Country of publishing house
CH - SWITZERLAND
Number of pages
9
Pages from-to
156910
UT code for WoS article
000579868900119
EID of the result in the Scopus database
2-s2.0-85090246182