Abstract
Transport properties of sputtered Fe3 O4 thin films have been studied with the current perpendicular to plane (CPP) configuration. Fabricated polycrystalline Fe3 O4 films exhibit superior CPP conductivity of 12 k Ω-1 · m-1. In addition to the Verwey transition (VT), observed at 114 K, another type of drastic conductivity change [field induced transition (FT)] was observed at lower temperature (T<70 K) and higher bias voltage (Vb ≥0.18 V) regime. The conductivity change at FT is discontinuous and several orders in magnitude. The transition temperature for FT presents considerable Vb dependence, contrarily no distinguished dependence for VT.
| Original language | English |
|---|---|
| Article number | 10C315 |
| Journal | Journal of Applied Physics |
| Volume | 97 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2005 May 15 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)
Cite this
CPP transport properties of polycrystalline Fe 3O 4 thin films sputtered on Cu underlayers. / Qin, F.; Nozaki, Yukio; Matsuyama, K.
In: Journal of Applied Physics, Vol. 97, No. 10, 10C315, 15.05.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - CPP transport properties of polycrystalline Fe 3O 4 thin films sputtered on Cu underlayers
AU - Qin, F.
AU - Nozaki, Yukio
AU - Matsuyama, K.
PY - 2005/5/15
Y1 - 2005/5/15
N2 - Transport properties of sputtered Fe3 O4 thin films have been studied with the current perpendicular to plane (CPP) configuration. Fabricated polycrystalline Fe3 O4 films exhibit superior CPP conductivity of 12 k Ω-1 · m-1. In addition to the Verwey transition (VT), observed at 114 K, another type of drastic conductivity change [field induced transition (FT)] was observed at lower temperature (T<70 K) and higher bias voltage (Vb ≥0.18 V) regime. The conductivity change at FT is discontinuous and several orders in magnitude. The transition temperature for FT presents considerable Vb dependence, contrarily no distinguished dependence for VT.
AB - Transport properties of sputtered Fe3 O4 thin films have been studied with the current perpendicular to plane (CPP) configuration. Fabricated polycrystalline Fe3 O4 films exhibit superior CPP conductivity of 12 k Ω-1 · m-1. In addition to the Verwey transition (VT), observed at 114 K, another type of drastic conductivity change [field induced transition (FT)] was observed at lower temperature (T<70 K) and higher bias voltage (Vb ≥0.18 V) regime. The conductivity change at FT is discontinuous and several orders in magnitude. The transition temperature for FT presents considerable Vb dependence, contrarily no distinguished dependence for VT.
UR - http://www.scopus.com/inward/record.url?scp=20944450746&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=20944450746&partnerID=8YFLogxK
U2 - 10.1063/1.1847191
DO - 10.1063/1.1847191
M3 - Article
AN - SCOPUS:20944450746
VL - 97
JO - Journal of Applied Physics
JF - Journal of Applied Physics
SN - 0021-8979
IS - 10
M1 - 10C315
ER -