Investigation of crystal structure confinement and optical attributes of monoclinic-tetragonal Zirconia nanocrystals via chemical co-precipitation technique

被引：21

作者：

Limbu, Sanjeeb ^{[1
]}

机构：

[1] North Eastern Hill Univ, Dept Nanotechnol, Shillong 793022, Meghalaya, India

来源：

BULLETIN OF MATERIALS SCIENCE | 2022年 / 45卷 / 04期

关键词：

X-ray techniques; Raman; crystal structure; photoluminescence; nanocrystal; ROOM-TEMPERATURE FERROMAGNETISM; DOPED ZRO2 NANOPARTICLES; MAGNETIC-PROPERTIES; MN; PHOTOLUMINESCENCE; FILMS; NANOSTRUCTURES; PHASES;

D O I：

10.1007/s12034-022-02769-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Mn-activated ZrO2 nanocrystal was successfully synthesized using the chemical co-precipitation technique. Nanocrystals have been widely studied in terms of their structural and optical aspects. X-ray diffraction (XRD) analysis confirmed the formation of monoclinic and tetragonal phases in pure and Mn-doped ZrO2 nanocrystals. The unit cell structure of m-ZrO2 and t-ZrO2 has been modelled using the Rietveld refinement crystallographic data. A photoluminescence (PL) study revealed emission intensity peaks at 378 nm for pure ZrO2 and 380 nm for Mn-doped ZrO2 nanocrystal under 280 nm excitation. A significant red shift was observed in Mn-doped ZrO2 nanocrystal due to the oxygen vacancy. The incorporation of Mn to ZrO2 nanocrystals reduced the optical band gap from 5.07 to 2.02 eV. The morphological analysis revealed that the typical particle sizes were in the nanoscale range, with 38 nm for pure ZrO2 and 70 nm for Mn-doped ZrO2 nanocrystals.

引用

页数：11

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