Title :
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
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;
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
DOI :
10.1109/INTMAG.2002.1001329
