Verwey transition in field-emitted electrons from <110>-oriented magnetite whisker

Author

Nagai, Shigekazu ; Hata, Koichi ; Okada, Morihiro ; Mimura, Hidenori

Author_Institution

Grad. Sch. of Eng., Mie Univ., Tsu, Japan

fYear

2009

fDate

20-24 July 2009

Firstpage

71

Lastpage

72

Abstract

Magnetite Fe<sub>2</sub>O<sub>3</sub> whiskers are synthesized by thermal oxidation of a stainless steel substrate and identified as a single crystal extending in <110> direction by transmission electron microscopy. Field emission microscope (FEM) equipped with Mott polarization analyzer under pressure of 2times10^-8 Pa are carried out to confirm the origin of Verwey transition by investigating tip temperature and voltage dependence of spin polarisation of the field-emitted electrons.

Keywords

electron field emission; field emission electron microscopy; magnesium compounds; metal-insulator transition; spin polarised electron emission; transmission electron microscopy; whiskers (crystal); <110>-oriented magnetite whisker; FEM; Fe₂O₃; Mott polarization analysis; Verwey transition; field emission microscopy; field-emitted electrons; single crystal; spin polarisation; stainless steel substrate; thermal oxidation; tip temperature; transmission electron microscopy; Electron emission; Electron microscopy; Magnetic analysis; Magnetic force microscopy; Oxidation; Polarization; Steel; Temperature dependence; Transmission electron microscopy; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Nanoelectronics Conference, 2009. IVNC 2009. 22nd International

Conference_Location

Shizuoka

Print_ISBN

978-1-4244-3587-6

Electronic_ISBN

978-1-4244-3588-3

Type

conf

DOI

10.1109/IVNC.2009.5271835

Filename

5271835