Temperature and frequency dependences of real part of impedance in the FeCoZr-doped PZT nanogranular composites

被引：32

作者：

Larkin, Andrei V. ^{[1
]}

Fedotov, Alexander K. ^{[1
]}

Fedotova, Julia A. ^{[2
]}

Koltunowicz, Tomasz N. ^{[3
]}

Zhukowski, Pawel ^{[3
]}

机构：

[1] Belarusian State Univ, Minsk 220030, BELARUS

[2] BSU, Natl Ctr Particles & High Energy Phys, Minsk 220040, BELARUS

[3] Lublin Univ Technol, PL-20618 Lublin, Poland

来源：

MATERIALS SCIENCE-POLAND | 2012年 / 30卷 / 02期

关键词：

impedance; ion-beam sputtering; nanocomposites; ELECTRICAL-PROPERTIES;

D O I：

10.2478/s13536-012-0015-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The study of carrier transport in granular nanocomposite films consisting of ferromagnetic Fe45Co45Zr10 alloy nanoparticles embedded in a low-conductive Pb81Sr4(Na5Bi5)(15)(Zr57.5Ti42.5)O-3 matrix has been performed. Real part of the impedance of the nanocomposites was studied as a function of composition, temperature and frequency, for the samples with 25 a parts per thousand currency sign x a parts per thousand currency sign 80 at.%, deposited by ion-beam sputtering in Ar + O-2 gas mixture at the oxygen pressures of = 2.4 center dot 10(-3) and 3.7 center dot 10(-3) Pa. It has been proved that approaching the threshold concentration, x (C) in the FeCoZr alloy resulted in the transition from high-ohmic to low-ohmic state with the x increase, without the change of hopping mechanism of carrier transport.

引用

页码：75 / 81

页数：7

共 16 条

[1] Magnetism in low dimensionality [J].

Bader, SD .

SURFACE SCIENCE, 2002, 500 (1-3) :172-188

[2]

FEDOTOVA J., 2009, P 54 INT WISS K INFR

[3]

Fedotova J, 2012, TRANSPORT LADUNKOW W

[4] Magnetoresistance in FeCoZr-Al2O3 nanocomposite films containing 'metal core-oxide shell' nanogranules [J].

Fedotova, J. A. ;

Przewoznik, J. ;

Kapusta, Cz ;

Milosavljevic, M. ;

Kasiuk, J. V. ;

Zukrowski, J. ;

Sikora, M. ;

Maximenko, A. A. ;

Szepietowska, D. ;

Homewood, K. P. .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2011, 44 (49)

[5]

Kalinin Yu.E., 2001, PHYS CHEM MAT TREATM, V5, P14

[6]

Koltunowicz TN, 2011, ACTA PHYS POL A, V120, P39

[7]

Mott N., 1979, CLARENDON, P465

[8]

POKLONSKIY N. A, 2005, BASIS IMPEDANCE SPEC

[9] Impedance and magnetization of CoFeZr nanoclusters embedded into alumina matrix [J].

Saad, A. M. ;

Fedotov, A. K. ;

Svito, I. A. ;

Fedotova, J. A. ;

Andrievsky, B. V. ;

Kalinin, Yu. E. ;

Patryn, A. A. ;

Fedotova, V. V. ;

Malyutina-Bronskaya, V. ;

Mazanik, A. V. ;

Sitnikov, A. V. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2006, 423 (1-2) :176-180

[10]

Saad AM, 2004, REV ADV MATER SCI, V8, P152

← 1 2 →