Journal Article Magnetoresistance at Room Temperature of Oleic Acid Coated Fe3-xCoxO4 (x = 0, 0.1 and 0.3) Nanocrystal Drop-Cast Films

Nara, Koichiro  ,  Namimatsu, Daiki  ,  Mitome, Masanori  ,  Kohiki1, Shigemi

40 ( 1 )  , pp.55 - 58 , 2015-04-28 , 日本MRS
ISSN:1382-34692188-1650
Description
Oleic acid coated Fe3-xCoxO4 (x = 0, 0.1 and 0.3) nanocrystal self-assembled films were fabricated via drop-casting of colloidal particles on a SiO2/Si substrate. Nanocrystals of the Fe3-xCoxO4 exhibited bifurcation of the zero-field-cooled and field-cooled magnetizations at 300 K. The Fe3-xCoxO4 nanocrystal drop-cast films demonstrated nonlinear current-voltage characteristics between the source and drain electrodes in magnetic fields of zero and 0.2 T, and magnetoresistance reached into −46% for the x = 0 film and −50% for both the x = 0.1 and 0.3 films at 300 K. Oleic acid coated Fe3-xCoxO4 (x = 0.1 and 0.3) nanocrystal would boost developments of a high performance current switching device using negative magnetoresistance.
Full-Text

https://kyutech.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4966&item_no=1&attribute_id=17&file_no=1

Number of accesses :  

Other information