Percolation behavior of Ag in Ge16Sb12Se72 glassy matrix and its impact on corresponding ionic conductivity

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F19%3A00498997" target="_blank" >RIV/61389013:_____/19:00498997 - isvavai.cz</a>

Alternative codes found

RIV/00216275:25310/19:39915477

Result on the web

<a href="https://hal-univ-rennes1.archives-ouvertes.fr/hal-01990469/file/Patil%20et%20al_2018_Percolation%20behavior%20of%20Ag%20in%20Ge16Sb12Se72%20glassy%20matrix%20and%20its%20impact%20on.pdf" target="_blank" >https://hal-univ-rennes1.archives-ouvertes.fr/hal-01990469/file/Patil%20et%20al_2018_Percolation%20behavior%20of%20Ag%20in%20Ge16Sb12Se72%20glassy%20matrix%20and%20its%20impact%20on.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2018.12.140" target="_blank" >10.1016/j.jallcom.2018.12.140</a>

Result language

angličtina

Original language name

Percolation behavior of Ag in Ge16Sb12Se72 glassy matrix and its impact on corresponding ionic conductivity

Original language description

In the present article, the silver diffusion behavior and its influence on ionic conduction have been studied from a series of glass samples Agx(Ge16Sb12Se72)100-x with 0 ≤ x ≤ 25. A non-linear evolution of the ionic conduction as a function of Ag concentration was found and attributed to a variation in the diffusion mechanism following the Ag rate. The glasses with Ag concentration lower than 5 at. % i.e. for Ag0.2 to Ag1, the Ag+ diffusion mainly occurs via a percolation mechanism, whereas for the Ag concentration from Ag5 up to Ag15, a hopping mechanism is prevailing. However, for Ag5 the diffusion occurs with mixed mechanism i.e. percolation + hopping way. For the Ag content higher than 15 at. % the diffusion occurs via a correlated walk and it was found that the repulsive nature between the Ag+ ions in the high concentrated sample due to much shorter distance does not show self-blocking nature. Additionally, the samples show a transition from electronic to ionic conductivity. From Raman analysis a correlation between the content of Ag and the type of GeSe4/2 tetrahedron, corner or edge-shared, which takes place in the structure, was evidenced. Finally, the results allow a better understanding of the mechanism of the Ag conduction in the glasses of the Ge-Sb-Se system using the random-walk (RW) model.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10402 - Inorganic and nuclear chemistry

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Volume of the periodical

782

Issue of the periodical within the volume

25 April

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

375-383

UT code for WoS article

000458608600042

EID of the result in the Scopus database

2-s2.0-85058695961