Effects of Ba doping on physical properties of La-Ca-Mn-O thin films

Author

Nguyen Hoa Hong ; Imai, Suguru ; Sakai, J. ; Iwasaki, Hisao

Author_Institution

Sch. of Mater. Sci., Japan Adv. Inst. of Sci. & Technol., Ishikawa, Japan

fYear

2002

Abstract

Summary form only given. Transport and magnetic properties of La-Ba-Ca-Mn-O thin films fabricated by the pulsed laser deposition technique had been investigated to see the effects of substitution of the small atom Ca by Ba which is much bigger. The insulator-to-metal (IM) transition was obtained in several compositions. Magnetoresistance was also measured. Coexistence of canted antiferromagnetic insulating (CAFI) and ferromagnetic metallic (FMM) states was evidenced. It was also found that doping enhances the paramagnetism (PR)-ferromagnetism (FM) transition temperature.

Keywords

calcium compounds; ferromagnetic materials; ferromagnetic-paramagnetic transitions; lanthanum compounds; magnetic structure; magnetic thin films; magnetoresistance; metal-insulator transition; Ba doping effect; La-Ca-Mn-O thin films; insulator-to-metal transition; magnetic phase coexistence; magnetic properties; magnetoresistance; paramagnetic-ferromagnetic transition temperature; pulsed laser deposition; transport properties; Atom lasers; Doping; Insulation; Laser theory; Magnetic films; Magnetic properties; Optical pulses; Pulsed laser deposition; Sputtering; Transistors;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2002. INTERMAG Europe 2002. Digest of Technical Papers. 2002 IEEE International

Conference_Location

Amsterdam, The Netherlands

Print_ISBN

0-7803-7365-0

Type

conf

DOI

10.1109/INTMAG.2002.1001329

Filename

1001329