Thin perovskite-type ferromagnetic film (La,Sr)CoO3

39th International Microelectronics and Packaging IMAPS Poland 2015 Conference

无线电电子学

Loziski, A.^1

Gdynia Maritime University, Poland^1

关键词: Electrical conductivity;    Ferromagnetic properties;    Lanthanum strontium cobalt oxide;    Magnetoresistive property;    Manufacturing process;    Partial substitution;    Perovskite type oxides;    Thermal coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/104/1/012018/pdf
DOI  :  10.1088/1757-899X/104/1/012018

来源: IOP

【 摘 要 】

Properties of materials having a perovskite-type oxide crystal structure ABO3 can easily be modified by means of partial substitution of cations located at A or B sites. Nonstoichiometric lanthanum-strontium cobalt oxides (La,Sr)CoO3also referred to as LSCO exhibit electrical conductivity and ferromagnetic properties. Perovskite-type compounds LaCoO3and SrCoO3can form solid solutions in every ratios to each other. Notation (La,Sr)CoO3, or La(1-x)SrxCoO3means that some lanthanum ions are substituted with the strontium ones at A sites of crystal cell. This paper describes a sol-gel manufacturing process of LSCO thin films, presents measurements of their resistivity vs. composition, shows thermal coefficient of selected composition resistivity as well as its magnetoresistive properties.