Room temperature ferromagnetic behavior in the nanocrystals of Fe doped ZnO synthesized by soft chemical route

Bhandarkar, L. V.

doi:10.2478/msp-2019-0057

Artykuł - szczegóły

Tytuł artykułu

Room temperature ferromagnetic behavior in the nanocrystals of Fe doped ZnO synthesized by soft chemical route

Autorzy

Bhandarkar L. V.

Wybrane pełne teksty z tego czasopisma

Identyfikatory

DOI

10.2478/msp-2019-0057

Warianty tytułu

Języki publikacji

Abstrakty

In the present study, nanocrystalline undoped and Fe (5 wt.%) doped ZnO powder has been synthesized by soft chemical route. The structural, nano/microstructural, vibrational and magnetic properties of these samples have been studied as a function of calcination temperature (400 °C to 1100 °C). X-ray diffraction analysis of Fe doped ZnO powder has shown the major nanocrystalline wurtzite (ZnO) phase and the minor cubic spinel-like secondary nanocrystalline phase at 700 °C. At calcination temperature of 700 °C, the magnetization and coercivity have been enhanced in Fe doped ZnO. As the calcination temperature increased to 1100 °C, the major phase of ZnO and minor cubic spinel-like secondary phase turned into bulk in doped ZnO. Interestingly, the reduced magnetization and zero coercivity have been observed in this case. These changes are attributed to the conversion of secondary nanocrystalline ferromagnetic spinel phase to its bulk paramagnetic phase. The degree of inversion i.e. the occupancy of both sites with different symmetry by ferric ions is proposed to be solely responsible for the unusual behavior.

Słowa kluczowe

ZnO nanocrystals Fe doped ZnO nanocrystal sol-gel route X-ray diffraction secondary phases room-temperature ferromagnetism

Wydawca

De Gruyter

Czasopismo

Materials Science Poland

Rocznik

2019

Tom

Vol. 37, No. 3

Strony

364--372

Opis fizyczny

Bibliogr. 43 poz., tab., rys.

Twórcy

autor

Bhandarkar L. V.

blv.physics@coep.ac.in

Department of Physics, Government College of Engineering, Pune, Pune-411 005, India
Department of Physics, Savitribai Phule Pune University, Ganeshkhind, Pune-411 007, India

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).

Typ dokumentu

Bibliografia

Identyfikator YADDA

bwmeta1.element.baztech-d86f123f-3678-4434-9f49-1376dfe480b5