Giant Magnetoresistance Behavior in Epitaxial Nd0.7Sr0.3MnO3−δ and La0.67Ba0.33MnO3−δ Thin Films

1995 ◽  
Vol 384 ◽  
Author(s):  
G.C. Xiong ◽  
Q. Li ◽  
H.L. Ju ◽  
J. Wu ◽  
L. Senapati ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Sample Preparation ◽  
Manganese Oxide ◽  
Giant Magnetoresistance ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Oxygen Stoichiometry ◽  
Preparation Conditions ◽  
And Diffusion

ABSTRACTEpitaxial Nd0.7Sr0.3MnO3-δ and La0.67Ba0.33MnO3-δ thin films with large magnetoresistance ratios have been prepared by pulsed laser deposition. Huge negative magnetoresistance ratios of -ΔR/RH > 1×106 % were obtained at 60 K and a magnetic field of 8 T in a Nd0.7Sr0.3MnO3-δ film. The influence of sample preparation conditions on the resistivity behavior of these films has been studied. Results suggest that oxygen stoichiometry and diffusion are important factors in causing the behavior observed in doped manganese oxide films.

scholarly journals Oxygen in Complex Oxide Thin Films Grown by Pulsed Laser Deposition: a Perspective

2019 ◽  
Vol 33 (1) ◽  
pp. 205-212 ◽  
Author(s):  
Gertjan Koster ◽  
Dave H. A. Blank ◽  
Guus A. J. H. M. Rijnders
Keyword(s):  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Complex Oxide ◽  
Laser Deposition ◽  
Oxygen Stoichiometry ◽  
Oxide Thin Films ◽  
Film Synthesis ◽  
Kinetics Of ◽  
Oxidation Mechanisms

Abstract For thin film synthesis of complex oxides, one of the most important issues has always been how to oxidise the material. For a technique like pulsed laser deposition, a key benefit is the relatively high oxygen background pressure one can operate at, and therefor oxidation should be relatively straightforward. However, understanding the microscopic oxidation mechanisms turns out to be rather difficult. In this perspective, we give a brief overview of the sources of oxidation for complex oxide thin films grown by pulsed laser deposition. While it is clear what these sources are, their role in the kinetics of the formation of the crystal structure and oxygen stoichiometry is not fully understood.

Preparation of epitaxial BiFeO3 thin films on La-SrTiO3 substrate by using magnetic-field-assisted pulsed laser deposition

2013 ◽  
Vol 62 (7) ◽  
pp. 1041-1045 ◽  
Author(s):  
Jung Min Park ◽  
Masayuki Sohgawa ◽  
Takeshi Kanashima ◽  
Masanori Okuyama ◽  
Seiji Nakashima
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Srtio3 Substrate ◽  
Bifeo3 Thin Films

scholarly journals Transparent Conducting Al-Zn-O Thin Films Prepared by Pulsed Laser Deposition in Magnetic Field Perpendicular to the Plume

Shinku ◽  
2003 ◽  
Vol 46 (10) ◽  
pp. 752-755 ◽  
Author(s):  
Hideaki AGURA ◽  
Akio SUZUKI ◽  
Takanori AOKI ◽  
Tatsuhiko MATSUSHITA ◽  
Hirokazu OKINAKA ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Transparent Conducting

Study of manganese oxide thin films grown by pulsed laser deposition

2009 ◽  
Vol 517 (5) ◽  
pp. 1592-1595 ◽  
Author(s):  
S. Isber ◽  
E. Majdalani ◽  
M. Tabbal ◽  
T. Christidis ◽  
K. Zahraman ◽  
...  
Keyword(s):  
Thin Films ◽  
Manganese Oxide ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Oxide Thin Films

In-Situ Magnetic Field Induced Structure and Properties of Epitaxial Spinel Ferrite Thin Films Prepared by Pulsed Laser Deposition (PLD) (Dynamic Aurora PLD Method)

2004 ◽  
Vol 853 ◽  
Author(s):  
Naoki Wakiya ◽  
Toyokazu Nagamune ◽  
Kazuo Shinozaki ◽  
Nobuyasu Mizutani
Keyword(s):  
Magnetic Field ◽  
Thin Films ◽  
Magnetic Properties ◽  
Pulsed Laser Deposition ◽  
Deposition Rate ◽  
Spinel Ferrite ◽  
Pulsed Laser ◽  
Lattice Parameter ◽  
Laser Deposition

ABSTRACTThe influence of an in-situ magnetic field on the plume during pulsed laser deposition (PLD) to prepare epitaxial nickel zinc ferrite (NZF) thin films were investigated. An air core coil (solenoid coil) was installed between a target and a substrate, and up to 43 mT of magnetic field was generated by direct current (DC)(Dynamic Aurora PLD method). Application of magnetic field brought about following structural and property changes;(1) deposition rate was almost doubled, (2) the concentration of Ni and Zn in the film was decreased, (3) lattice parameter was unchanged, and (4) magnetization and coercivity was increased. Since deposition rate was increased by application of magnetic field, films with same thickness was also prepared without magnetic field, however, magnetic properties were unchanged. This indicates that application of in-situ magnetic field improved magnetic properties.

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