Estimation of magnetic susceptibility anisotropy of carbon nanotubes using magnetophotoluminescence
Nano letters, 2004•ACS Publications
We have carried out a magnetophotoluminescence excitation spectroscopy study on micelle-
suspended single-walled carbon nanotubes in high magnetic fields. By analyzing field-
dependent spectral changes, we determined the degree of magnetic alignment of the
observed semiconducting nanotubes at 45 T. This, together with an independently
measured length distribution of the nanotubes, allowed us to estimate the magnitude of the
magnetic susceptibility anisotropy χ∥− χ⊥ to be∼ 1.4× 10-5 emu/mol for 1-nm-diameter …
suspended single-walled carbon nanotubes in high magnetic fields. By analyzing field-
dependent spectral changes, we determined the degree of magnetic alignment of the
observed semiconducting nanotubes at 45 T. This, together with an independently
measured length distribution of the nanotubes, allowed us to estimate the magnitude of the
magnetic susceptibility anisotropy χ∥− χ⊥ to be∼ 1.4× 10-5 emu/mol for 1-nm-diameter …
We have carried out a magnetophotoluminescence excitation spectroscopy study on micelle-suspended single-walled carbon nanotubes in high magnetic fields. By analyzing field-dependent spectral changes, we determined the degree of magnetic alignment of the observed semiconducting nanotubes at 45 T. This, together with an independently measured length distribution of the nanotubes, allowed us to estimate the magnitude of the magnetic susceptibility anisotropy χ∥ − χ⊥ to be ∼1.4 × 10-5 emu/mol for 1-nm-diameter semiconducting nanotubes.
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