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Pregled bibliografske jedinice broj: 598224

Structure, microstructure and photoluminescence of nanocrystalline Ti-doped gahnite


Vrankić, Martina; Gržeta, Biserka; Mandić, Vilko; Tkalčec, Emilija; Milošević, Slobodan; Čeh, Miran; Rakvin, Boris
Structure, microstructure and photoluminescence of nanocrystalline Ti-doped gahnite // Journal of alloys and compounds, 543 (2012), 213-220 doi:10.1016/j.jallcom.2012.07.073 (međunarodna recenzija, članak, znanstveni)


Naslov
Structure, microstructure and photoluminescence of nanocrystalline Ti-doped gahnite

Autori
Vrankić, Martina ; Gržeta, Biserka ; Mandić, Vilko ; Tkalčec, Emilija ; Milošević, Slobodan ; Čeh, Miran ; Rakvin, Boris

Izvornik
Journal of alloys and compounds (0925-8388) 543 (2012); 213-220

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Transition metal alloys and compounds ; sol-gel processing ; crystal structure ; X-ray diffraction ; transmission electron microscopy ; luminescence

Sažetak
A series of Ti-doped ZnAl2O4 (gahnite) samples with doping levels of 0, 1.8, 3.8, 5.4 and 11.6 at% Ti in relation to Al were prepared by a sol-gel technique. The samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), EPR spectroscopy, UV-vis reflectance spectroscopy and photoluminescence (PL) studies. Diffraction patterns indicated that all samples were nanocrystalline, with a spinel-type structure, space group Fd m. Titanium doping of gahnite caused an increase of unit-cell parameter and diffraction line broadening. The structure of samples was refined by the Rietveld method, simultaneously with the analysis of diffraction line broadening. TEM investigations confirmed that samples had spinel-type structure, and showed that samples contained evenly shaped particles of about 20 nm in size. Ti-doped samples exhibited strong absorption at wavelength <400 nm, and blue photoluminescence under excitation with λexc=308 nm.

Izvorni jezik
Engleski

Znanstvena područja
Fizika, Temeljne tehničke znanosti



POVEZANOST RADA


Projekt / tema
035-0352851-2856 - Laserska spektroskopija hladne plazme za obradu materijala (Slobodan Milošević, )
098-0982886-2893 - Dopirani optoelektronički i keramički nanomaterijali (Biserka Gržeta, )
098-0982915-2939 - Molekulska struktura i dinamika sustava s paramagnetskim česticama (Marina Ilakovac-Kveder, )
125-1252970-2981 - Keramički nanokompoziti dobiveni sol-gel postupkom (Stanislav Kurajica, )

Ustanove
Institut za fiziku, Zagreb,
Institut "Ruđer Bošković", Zagreb,
Fakultet kemijskog inženjerstva i tehnologije, Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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