Open AccessNovel mechanism of photoinduced magnetism in organic-based magnetic semiconductor V(TCNE)x, x∼2
Author(s) -
JungWoo Yoo,
R. Shima Edelstein,
N. P. Raju,
D. M. Lincoln,
A. J. Epstein
Publication year - 2008
Publication title -
journal of applied physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.699
H-Index - 319
eISSN - 1089-7550
pISSN - 0021-8979
DOI - 10.1063/1.2830960
Subject(s) - ferrimagnetism , magnetism , magnetization , condensed matter physics , materials science , magnetic semiconductor , magnetic anisotropy , ferromagnetic resonance , electron paramagnetic resonance , anisotropy , organic semiconductor , semiconductor , metastability , nuclear magnetic resonance , chemistry , optoelectronics , magnetic field , optics , physics , organic chemistry , quantum mechanics
The organic-based magnet V (TCNE)x, x∼2 (Tc ∼400 K), is a room temperature magnetic semiconductor with spin polarized valence and conduction bands. It was reported that this material exhibits persistent photoinduced change in both magnetization and conductivity. The simultaneous change in IR spectra by illumination shows photoinduced activation to the metastable state with a small structural change. Here, we employed photoinduced ferrimagnetic resonance (FMR) study to investigate photoinduced magnetization in V (TCNE)x film. The FMR spectra display substantial changes in their linewidth and line shift by the illumination indicating substantial increase in random magnetic anisotropy. The results demonstrate optical control of magnetism by changing magnetic anisotropy of the system.open1
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom