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2005 | 3 | 1 | 115-126
Article title

Magnetic and transport properties of monocrystallineFe
3
O
4

Authors
Content
Title variants
Languages of publication
EN
Abstracts
EN
A monocrystal ofFe
3
O
4 is characterized by resistance, magnetoresistance and magnetic measurements in a temperature range from 4.2 K to 350 K and magnetic field-cycling from −9 T to 9 T. The resistance measurements revealed a metal-insulator Verwey transition (VT) atT
v=123.76 K with activation energy E=92.5 meV at T >T
v and temperature-substitute for the activation energy below the VT,T
0=E/k
B≈3800 K within 70 K–110K. The magnetotransport results independently verified the VT at 123.70 K, with discontinuous change in the magnetic moment ΔM≈0.21 ΔM≈0.21μ
B and resistance hysteresis, dependent on the magnetic field in a narrow temperature range of 0.4° around theT
v. The magnetic characterization established self consistentlyT
v as ≈123.67 K, the jump in the magnetization at the VT≈0.25μ
B and confirmed, that the magnetocrystalline anisotropy is the main microscopic mechanism responsible for the magnetization of the monocrystal (88%) with additional natural and imposed defects contributing as 12%.
Publisher
Journal
Year
Volume
3
Issue
1
Pages
115-126
Physical description
Dates
published
1 - 3 - 2005
online
1 - 3 - 2005
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Document Type
Publication order reference
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_BF02476510
Identifiers
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