Structure and magnetic properties Zn0.96Cu0.01Ni0.03O nanoparticles

Yıl 2019, , 255 - 260, 01.09.2019

Adil Güler

https://doi.org/10.7240/jeps.560040

Öz

Zn_0.96Cu_0.01Ni_0.03O nanoparticles were prepared by sol-gel technique and
annealed under wide temperature range (450, 500, 550, 600, 700, 800, and
900 ⁰C). To figure out the
possible structural phases X-ray diffraction technique (XRD) was used. The
lattice parameters were calculated by Rietveld analysis and correlated by
annealing temperatures. For the synthesized nanoparticles, the optimum
annealing temperatures were achieved at 450, 500, and 550 °C and further
annealing temperature increment gave rise to secondary NiO peaks. The Scanning
Electron Microscope (SEM) images show random ball-shaped particle distribution.
Energy
dispersive X-ray spectroscopy (EDX) showed only the peaks belong to the
composition. Magnetic measurements were performed using Quantum Design
Vibrating Sample Magnetometer (QDVSM) tool for Zn_0.96Cu_0.01Ni_0.03O nanosystems. From the DC magnetic field dependent
magnetization curves, clear paramagnetic behavior was revealed for all Cu-Ni
co-doped ZnO nanoparticles.

Anahtar Kelimeler

Sol-gel method, Cu Ni and ZnO nanosystems, Magnetic properties

Zn0.96Cu0.01Ni0.03O nanoparçacıkların yapısal ve manyetik özellikleri

Öz

Zn_0.96Cu_0.01Ni_0.03O
nanoparçacıkları, sol-gel tekniği ile hazırlanıp geniş sıcaklık aralığında
(450, 500, 550, 600, 700, 800, 900 ° C) tavlandı. Olası yapısal fazları
belirlemek için X-ışını kırınım tekniği (XRD) kullanılmıştır. Kafes
parametreleri Rietveld analizi ile hesaplanmış ve tavlama sıcaklıkları ile
ilişkilendirilmiştir. Sentezlenen nanoparçacıklar için, optimum tavlama
sıcaklıkları 450, 500 ve 550 ° C'de elde edildi ve ayrıca tavlama sıcaklığı
artışı ikincil NiO fazlarına yol açmıştır. Taramalı Elektron Mikroskobu (SEM)
görüntüleri rastgele küre şeklindeki parçacık dağılımını göstermektedir. Enerji
dağıtıcı X-ışını spektroskopisi (EDX) sadece kompozisyona ait pikleri göstermektedir.
Zn_0.96Cu_0.01Ni_0.03O nanoparçacıkları için manyetik
ölçümler, Kuantum Dizayn Titreşen Örnek Manyetometresi (QDVSM) kullanılarak
yapıldı. DC manyetik alana bağlı mıknatıslanma eğrilerinden, tüm Cu-Ni ortak
katkılı ZnO nanoparçacıklarının net paramanyetik davranışı gösterildi.

Anahtar Kelimeler

Sol-gel metot, Cu Ni ve ZnO nanosistemleri, Manyetik özellikler

Kaynakça

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