Electron Spin Relaxation Time of Ultrafine Zinc Particles Measured by Spin Probe Method
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概要
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A new method of observing the quantum size effect of ultrafine zinc particles is pro-posed. In the method proposed, an ESR-active ton as a spiut probe is added toultrafine particles (UFP's). The electronic state of conduction electron of UFP's isindirectly monitored via an observation of the ESR of this spin through the interac-lion between a spin probe and conduction electrons as in the case of d-electron spinresonance in metals. We measure the longitudinal electron spin relaxation time T. asfunctions of temperature and particle size. The observed T. is an exponential functionof the inverse of temperature in the low temperature region (7'< 10 K). When theparticle size becomes smaller, a phonon with a long wavelength no longer exists in aparticle and the energy transfer from a spin system to a phonon system is prevented ina low temperature region. The quantum size effect on the phonon energy dispersionstated above is discussed in detail.
- 社団法人日本物理学会の論文
- 1988-08-15
著者
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Kimura Keisaku
Instrument Center Institute For Molecular Science
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BANDOW Shunji
Instrument Center, Institute for Molecular Science
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Bandow S
Meijo Univ. Nagoya Jpn
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Bandow Shunji
Instrument Center Institute For Molecular Science
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Bandow S
Nanotubulites Project Japan Science And Technology Corporation Department Of Physics Meijo Universit
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