Measurement of z-direction component of electron spins field-emitted from a single-crystal magnetite whisker

S Nagai; H Sakakibara; K Hata; M Okada; H Mimura

doi:10.1016/j.ultramic.2011.01.022

Measurement of z-direction component of electron spins field-emitted from a single-crystal magnetite whisker

Ultramicroscopy. 2011 May;111(6):405-8. doi: 10.1016/j.ultramic.2011.01.022. Epub 2011 Feb 2.

Authors

S Nagai¹, H Sakakibara, K Hata, M Okada, H Mimura

Affiliation

¹ Graduate School of Engineering, Mie University, 1577 Kurima-machiya, Tsu 514-8507, Japan. s_nagai@em.elec.mie-u.ac.jp

PMID: 21664540
DOI: 10.1016/j.ultramic.2011.01.022

Abstract

A 90° sector type spin rotator was developed for measurement of the z-direction component of a spin polarization, which is parallel to the emitter axis. The rotator enables us to measure all components of electron spins field-emitted from a single crystalline magnetite. In-plane component of spin polarization dominated of field-emitted electrons from single crystalline magnetite whisker, thus it is suggested that the magnetization of the magnetite whisker results from the anisotropy of crystalline structure rather than its shape.