Resonance dielectric dispersion of TEA-CoCl2Br2 nanocrystals incorporated into the PMMA matrix

被引：23

作者：

Kapustianyk, V. ^{[1
]}

Shchur, Ya ^{[1
,2
]}

Kityk, I. ^{[3
]}

Rudyk, V. ^{[1
]}

Lach, G. ^{[4
]}

Laskowski, L. ^{[4
]}

Tkaczyk, S. ^{[4
]}

Swiatek, J. ^{[4
]}

Davydov, V. ^{[5
]}

机构：

[1] Ivan Franko Natl Univ Lviv, Sci Tech & Educ Ctr Low Temp Studies, UA-79005 Lvov, Ukraine

[2] Inst Condensed Matter Phys, UA-79011 Lvov, Ukraine

[3] Silesian Tech Univ, Dept Chem, PL-44100 Gliwice, Poland

[4] Jan Dlugosz Univ, Inst Phys, PL-42201 Czestochowa, Poland

[5] Ivan Franko Natl Univ Lviv, Dept Inorgan Chem, UA-79005 Lvov, Ukraine

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2008年 / 20卷 / 36期

关键词：

D O I：

10.1088/0953-8984/20/36/365215

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The dielectric properties of TEA-CoCl2Br2 nanocrystals incorporated into the polymethylmethacrylate matrix within the frequency range of 3 x 10(5)-2.6 x 10(9) Hz in the temperature region of 90-300 K were investigated. The considerable difference in the dielectric spectra of the nanocomposite compared to those of the bulk crystal and the pure polymer matrix was observed. The dielectric dispersion of the composite material reveals a resonance type (resonance frequency was found to be near 1.3 GHz) and may be qualitatively explained as the result of piezoelectric resonance on the nanocrystals. The model interpretation of this phenomenon based on the forced-dumped oscillator is presented.

引用

页数：7

共 31 条

[1]

Akselrud L. G., 1989, 12 EUR CRYSTALLOGRAP, V3, P155

[2]

[Anonymous], NEXUS J UNDERGRAD SC

[3]

[Anonymous], ACTA CRYSTALLOGR

[4]

ANTONOWICZ J, 1971, WLASNOSCI DIELEKTRYK, P216

[5] Piezoelectric resonance investigation of Zr-rich PZT at room temperature [J].

Cereceda, N ;

Noheda, B ;

Fdez-del-Castillo, JR ;

Gonzalo, JA ;

De Frutos, J ;

González, AM .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1999, 19 (6-7) :1259-1263

[6] On the broadband measurement of the permittivity and magnetic susceptibility of ferrofluids [J].

Fannin, PC ;

Charles, SW ;

Relihan, T .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 167 (03) :274-280

[7]

JONSHER A, 1996, UNIVERSAL RELAXATION, P312

[8] Phase transitions and dielectric relaxation in [N(C2H5)(4)](2)MeClBr2 (Me=Zn,Co) solid solutions. [J].

Kapustianik, V ;

Polovinko, I ;

Korchak, Y ;

Sveleba, S ;

Tchukvinskyi, R ;

Dacko, S ;

Czapla, Z .

FERROELECTRICS, 1997, 202 (1-4) :149-156

[9] Manifestation of the size effect in the optical and spectral properties of the (N(C2H5)4)2COCl2Br2 nanoclusters incorporated into the polymer matrix [J].

Kapustianyk, V. ;

Rudyk, V. ;

Partyka, M. ;

Kityk, I. ;

Tkaczyk, S. .

XIII INTERNATIONAL SEMINAR ON PHYSICS AND CHEMISTRY OF SOLIDS, 2007, 79

[10] Acoustic dispersion of (NH3C2H5)(2)MnCl4 near the structural phase transition at 226 K [J].

Kityk, AV ;

Schranz, W ;

Fuith, A ;

Havlik, D ;

Sopronyuk, VP ;

Warhanek, H .

PHYSICAL REVIEW B, 1996, 53 (06) :3055-3060

← 1 2 3 4 →