Manipulating the carrier concentration and phase transition via Nb content in SrTiO3

Zhe Zhang; Peihua Qian; Xingming Yang; Baixi Wu; H L Cai; F M Zhang; X S Wu

doi:10.1038/s41598-021-03199-7

Manipulating the carrier concentration and phase transition via Nb content in SrTiO₃

Sci Rep. 2022 Feb 15;12(1):2499. doi: 10.1038/s41598-021-03199-7.

Authors

Zhe Zhang^{1

2}, Peihua Qian^{1

2}, Xingming Yang^{1

2}, Baixi Wu^{1

2}, H L Cai^{1

2}, F M Zhang^{1

2}, X S Wu^{3

4}

Affiliations

¹ Institute of Materials Engineering, Nanjing University, Nantong, Jiangsu, 226019, China.
² National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, 210093, China.
³ Institute of Materials Engineering, Nanjing University, Nantong, Jiangsu, 226019, China. xswu@nju.edu.cn.
⁴ National Laboratory of Solid State Microstructures & Department of Physics, Nanjing University, Nanjing, 210093, China. xswu@nju.edu.cn.

Abstract

SrTiO₃ is a model of the perovskite-like compounds for structural transition which inducing the intriguing physical properties around the critical phase transition temperature T_AFD (antiferrodistortive, abbrev. as AFD). Here we report that the electrical transport behavior is a new way to quantify Nb concentration for Nb-doped SrTiO₃. The lattice parameter (c), phase transition temperature (T_AFD), and the carrier concentration (n) of SrTiO₃ may be manipulated by niobium doping. T_AFD increases with increasing the niobium content in a rate of about 30 K per (wt%, i.e. niobium element's weight verses total weight) niobium and n in a rate of about 2.5 [Formula: see text] 10²⁰/cm³ per (wt%) niobium.

Abstract

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