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Yoo, Jung-Woo
Functional Hybrid Materials and Devices Lab(FHMDL)
Research Interests
  • Transport properties, spintronics, organic/molucular magnet, electronic, and spintronics,
  • 2DEG, energy harvesting device, atomic/molecular layer deposition

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Photoinduced magnetism and random magnetic anisotropy in organic-based magnetic semiconductor V(TCNE)(x) films, for x similar to 2

Cited 20 times inthomson ciCited 12 times inthomson ci
Title
Photoinduced magnetism and random magnetic anisotropy in organic-based magnetic semiconductor V(TCNE)(x) films, for x similar to 2
Author
Yoo, Jung-WooEdelstein, R. ShimaLincoln, D. M.Raju, N. P.Epstein, A. J.
Keywords
ELECTRON-SPIN-RESONANCE; MOLECULE-BASED MAGNETS; ROOM-TEMPERATURE; T-C; GLASS; NI; TETRACYANOETHYLENE; BEHAVIOR; FE
Issue Date
2007-10
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW LETTERS, v.99, no.15, pp.1 - 4
Abstract
The V(TCNE)(x), x similar to 2 is an organic-based amorphous ferrimagnet, whose magnetic behavior is significantly affected in the low field regime by the random magnetic anisotropy. It was determined that this material has thermally reversible persistent change in both magnetization and conductivity driven by the optical excitation. Here, we report results of a ferrimagnetic resonance study of the photoinduced magnetism in V(TCNE)(x) film. Upon optical excitation (lambda similar to 457.9 nm), the ferrimagnetic resonance spectra display substantial changes in their linewidths and line shifts, which reflect a substantial increase in the random magnetic anistropy. The results reflect the role of magnetic anisotropy in disordered magnets and suggest a novel mechanism of photoinduced magnetism in V(TCNE)(x) induced by the increased structural disorder in the system.
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DOI
10.1103/PhysRevLett.99.157205
ISSN
0031-9007
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MSE_Journal Papers
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