La0.7Ca0.3MnO3-delta:Ag nanocomposite thin films with large temperature coefficient of resistance (TCR)

Jin，Fei1,2,4; Wu，Duojie2; Lu，Yani2,3; Pan，Zizhao3; Gu，Meng2; Wang，Hong1,2,3

2022-07-01

10.1016/j.jmat.2022.01.010

Journal of Materiomics   影响因子和分区

2352-8478

In this work, oxygen vacancy-regulated La0.7Ca0.3MnO3-delta:Ag (LCMO:A) nanocomposite thin films on LaAlO3 (001) substrates were investigated to obtain films with large temperature coefficient of resistance (TCR) values. LCMO:A nanocomposite thin films were synthesized using pulsed laser deposition, and oxygen pressures during film deposition and annealing steps were optimized. As oxygen pressures increased, lattice parameter increased from 70 Pa to 100 Pa, T-p increased monotonically from 168 K to 282 K, and average Mn4+ concentration in the film increased as indicated by X-ray photoemission spectroscopy data. Record high TCR value of similar to 37% K-1 was achieved in LCMO:A nanocomposite thin film prepared with optimal oxygen pressures, making this film promising candidate for applications in bolometers. (C) 2022 The Chinese Ceramic Society. Production and hosting by Elsevier B.V.

La0.7CaO3MnO3 Metal-insulator transition temperature Oxygen vacancies Temperature coefficient of resistance

SCI

英语

通讯

Key Area Research Plan of Guangdong[2020B010176001] ; Shenzhen Science and Technology Program["KQTD20180411143514543","JCYJ20180504165831308"] ; Shenzhen DRC project[[2018] 1433]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000829788300008

ELSEVIER

2-s2.0-85125741632

Web of Science

1.State Key Laboratory for Mechanical Behavior of Materials,School of Electronic and Information Engineering,Xi'an Jiaotong University,Xi'an,710049,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.Shenzhen Engineering Research Center for Novel Electronic Information Materials and Devices & Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming,Yunnan,650093,China

Jin，Fei,Wu，Duojie,Lu，Yani,et al. La0.7Ca0.3MnO3-delta:Ag nanocomposite thin films with large temperature coefficient of resistance (TCR)[J]. Journal of Materiomics,2022,8(4).

Jin，Fei,Wu，Duojie,Lu，Yani,Pan，Zizhao,Gu，Meng,&Wang，Hong.(2022).La0.7Ca0.3MnO3-delta:Ag nanocomposite thin films with large temperature coefficient of resistance (TCR).Journal of Materiomics,8(4).

Jin，Fei,et al."La0.7Ca0.3MnO3-delta:Ag nanocomposite thin films with large temperature coefficient of resistance (TCR)".Journal of Materiomics 8.4(2022).