A comparative study on pyrochlore phase formation in La2Zr2O7 in microscopic and macroscopic scale

被引：3

作者：

Banerjee, D. ^{[1
,2
]}

Parayil, Reshmi Thekke ^{[2
,3
]}

Gupta, Santosh K. ^{[2
,3
]}

Modak, Brindaban ^{[4
]}

Banerjee, Kakoli ^{[5
]}

Mohapatra, M. ^{[2
,3
]}

机构：

[1] Variable Energy Cyclotron Ctr, RCD BARC, Radiochem Lab, Kolkata 700064, India

[2] Homi Bhabha Natl Inst, Mumbai 400094, India

[3] Bhabha Atom Res Ctr, Radiochem Div, Mumbai 400085, India

[4] Bhabha Atom Res Ctr, Chem Div, Mumbai 400085, India

[5] Prabhu Jagatbandhu Coll, Kolkata, India

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2024年 / 333卷 / 03期

关键词：

La2Zr2O7; pyrochlore; TDPAC; Annealing effect; Fluorite to pyrochlore phase transformation; Atomic scale study; GENERALIZED GRADIENT APPROXIMATION; TOTAL-ENERGY CALCULATIONS; CONDUCTIVITY; SPECTROSCOPY;

D O I：

10.1007/s10967-023-09221-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Atomic scale study has been carried out to probe the pyrochlore phase formation in local scale and compare it with the long range ordering. Lanthanum zirconate (La2Zr2O7) pyrochlore was synthesized by wet chemistry and characterized by X-ray diffraction to study the long range ordering. Time Differential Perturbed gamma-gamma Angular Correlation (TDPAC) Spectroscopy was performed to identify the pyrochlore phase formation in local scale. Electron paramagnetic resonance and Photo-luminescence spectroscopic studies were used to identify the defects in local scale. Role of annealing and defects in nucleation of pyrochlore phase has been explored in the present study. An early identification of pyrochlore phase was successfully done by TDPAC spectroscopy.

引用

页码：1603 / 1609

页数：7

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