Structural and Electrical Properties of Nd-Doped (La,Sr)MnO 3 Bulk Ceramics

(La 0.7−x Nd x Sr 0.3 )MnO 3 (x = 0.15–0.3) specimens were prepared using the mixed oxide method. All specimens showed an orthorhombic crystalline structure and exhibited microstructures with sub-μm sized grains and pores. According to XPS analysis, Mn 2+ , Mn 3+ and Mn 4+ ions peaks corresponded wi...

Full description

Saved in:
Bibliographic Details
Published in:Transactions on electrical and electronic materials 2022, 23(1), , pp.19-24
Main Authors: 김창현, 이명규, 임정은, 이삼행, 박주석, 김병철, 이성갑
Format: Article
Language:English
Subjects:
전기공학
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:(La 0.7−x Nd x Sr 0.3 )MnO 3 (x = 0.15–0.3) specimens were prepared using the mixed oxide method. All specimens showed an orthorhombic crystalline structure and exhibited microstructures with sub-μm sized grains and pores. According to XPS analysis, Mn 2+ , Mn 3+ and Mn 4+ ions peaks corresponded with binding energies of 640.6–640.9 eV, 642.0–642.4 eV, and 643.4–644.1 eV, respectively. Mn ions were predominantly in Mn 2+ and Mn 3+ states. All specimens exhibited a negative temperature coefficient of resistance (NTCR), in which the resistance decreased linearly as the temperature increased. Resistivity increased with the amount of Nd. The 0.3 mol Nd doped LSMO specimen showed 2.85 × 10 4 Ω cm, the highest value of resistance. The 0.2 mol Nd-doped LSMO specimen showed the highest TCR value, which was − 0.36%/°C, and a B 25/65 value of 366 K. KCI Citation Count: 0
ISSN:1229-7607
2092-7592
DOI:10.1007/s42341-021-00372-7