Repozitorij Univerze v Novi Gorici

Izpis gradiva
A+ | A- | Pomoč | SLO | ENG

Naslov:Weathering induced morphological modification on the thermal diffusivity of natural pyrrhotite : a thermal lens study
Avtorji:ID Swapna, Mohanachandran Nair Sindhu (Avtor)
ID Gokul, Vijayakumar (Avtor)
ID Raj, Vimal (Avtor)
ID Manu Raj, R. (Avtor)
ID Kumar, S. N. (Avtor)
ID Iyer Sankararaman, Sankaranarayana (Avtor)
Datoteke:URL https://www.tandfonline.com/doi/epub/10.1080/14786435.2021.1872810?needAccess=true
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:UNG - Univerza v Novi Gorici
Opis:Natural pyrrhotites have gained significant attention due to their interesting electronic, antimicrobial, and chemical properties. The present work attempts to explore the morphology-induced modifications in the thermal characteristics of natural pyrrhotite due to ageing. The morphological, elemental, structure, optical, and thermal characterisations help in understanding the effect of ageing. The effects of five years of ageing of the sample are (i) Field Emission Scanning Electron Microscopic analysis reveals a morphological transformation from flakes to agglomerated powder, (ii) elemental analyses suggest the ageing induced compositional modification (iii) the Tauc plot analysis shows a bandgap energy modification from 1.46 eV to 1.92 eV, (iv) X-ray Diffraction (XRD), Fourier Transform Infrared, and X-ray photoelectron spectroscopic studies affirm the formation of oxy-hydroxides (v) the XRD data indicates an increase of dislocation density, and (vi) Photoluminescence study shows a deep violet emission evidenced through the CIE plot. The study by the thermal lens technique shows a lowering of thermal diffusivity study by 23%, due to the morphological modifications, adsorbed/chemisorbed hydroxyl groups, and the formation of secondary compounds due to oxidation and weathering. The phonon boundary scattering, weathering induced smaller grain size, reduced phonon mean free path, and point defects also account for the lowering of the thermal diffusivity value and thereby influencing its properties.
Ključne besede:pyrrhotite, thermal diffusivity, thermal lens, ageing, morphology
Leto izida:2021
Št. strani:str. 819-835
Številčenje:Vol. 101, no. 7
PID:20.500.12556/RUNG-7404 Novo okno
COBISS.SI-ID:113318915 Novo okno
UDK:54
ISSN pri članku:1478-6443
DOI:10.1080/14786435.2021.1872810 Novo okno
NUK URN:URN:SI:UNG:REP:0AC5IRLV
Datum objave v RUNG:30.06.2022
Število ogledov:2319
Število prenosov:8
Metapodatki:XML DC-XML DC-RDF
:
SWAPNA, Mohanachandran Nair Sindhu, GOKUL, Vijayakumar, RAJ, Vimal, MANU RAJ, R., KUMAR, S. N. in IYER SANKARARAMAN, Sankaranarayana, 2021, Weathering induced morphological modification on the thermal diffusivity of natural pyrrhotite : a thermal lens study. Philosophical magazine [na spletu]. 2021. Vol. 101, no. 7, p. 819–835. [Dostopano 27 marec 2025]. DOI 10.1080/14786435.2021.1872810. Pridobljeno s: https://www.tandfonline.com/doi/epub/10.1080/14786435.2021.1872810?needAccess=true
Kopiraj citat
  
Skupna ocena:
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
(0 glasov)
Vaša ocena:Ocenjevanje je dovoljeno samo prijavljenim uporabnikom.
Objavi na:Bookmark and Share


Postavite miškin kazalec na naslov za izpis povzetka. Klik na naslov izpiše podrobnosti ali sproži prenos.

Gradivo je del revije

Naslov:Philosophical magazine
Založnik:Taylor & Francis Group
ISSN:1478-6443
COBISS.SI-ID:19158567 Novo okno

Nazaj