Large magnetodielectric response in Pr0.6Ca0.4MnO3/polyvinylidene fluoride nanocomposites

被引：17

作者：

Chandrasekhar, K. Devi ^{[2
]}

Das, A. K. ^{[2
]}

Venimadhav, A. ^{[1
]}

机构：

[1] Indiana Inst Technol, Cryogen Engn Ctr, Kharagpur 721302, W Bengal, India

[2] Indian Inst Technol, Dept Phys & Meteorol, Kharagpur 721302, W Bengal, India

来源：

APPLIED PHYSICS LETTERS | 2011年 / 98卷 / 12期

关键词：

D O I：

10.1063/1.3571443

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the magnetic field effect on low frequency dielectric properties of Pr0.6Ca0.4MnO3/polyvinylidene fluoride nanocomposite with 22.5% volume fraction of Pr0.6Ca0.4MnO3 nanoparticles. A strong magnetodielectric response was observed below 120 K where Pr0.6Ca0.4MnO3 nanoparticles show the magnetic phase transition indicating a direct correlation between magnetism and dielectric properties. A large change in the dielectric permittivity similar to 30% has been observed in a magnetic field of 4.6 T with loss as low as 0.17 at 70 K. The observed magnetodielectric response has been attributed to the decrement of polaron activation barrier of Pr0.6Ca0.4MnO3 nanoparticles with the increase in magnetic field. (C) 2011 American Institute of Physics. [doi:10.1063/1.3571443]

引用

页数：3

共 15 条

[1] Resistive magnetodielectric property of polycrystalline γ-Fe2O3 [J].

Bonaedy, T. ;

Koo, Y. S. ;

Sung, K. D. ;

Jung, J. H. .

APPLIED PHYSICS LETTERS, 2007, 91 (13)

[2] Magnetocapacitance without magnetoelectric coupling [J].

Catalan, G .

APPLIED PHYSICS LETTERS, 2006, 88 (10)

[3] High dielectric permittivity in semiconducting Pr0.6Ca0.4MnO3 filled polyvinylidene fluoride nanocomposites with low percolation threshold [J].

Chandrasekhar, K. Devi ;

Venimadhav, A. ;

Das, A. K. .

APPLIED PHYSICS LETTERS, 2009, 95 (06)

[4] Enhanced grain surface effect on magnetic properties of nanometric La0.7Ca0.3MnO3 manganite: Evidence of surface spin freezing of manganite nanoparticles [J].

Dey, P. ;

Nath, T. K. ;

Manna, P. K. ;

Yusuf, S. M. .

JOURNAL OF APPLIED PHYSICS, 2008, 104 (10)

[5] Multiferroic and magnetoelectric materials [J].

Eerenstein, W. ;

Mathur, N. D. ;

Scott, J. F. .

NATURE, 2006, 442 (7104) :759-765

[6] Magnetodielectric consequences of phase separation in the colossal magnetoresistance manganite Pr0.7Ca0.3MnO3 -: art. no. 144429 [J].

Freitas, RS ;

Mitchell, JF ;

Schiffer, P .

PHYSICAL REVIEW B, 2005, 72 (14)

[7] Magnetocapacitance effect in multiferroic BiMnO3 -: art. no. 180401 [J].

Kimura, T ;

Kawamoto, S ;

Yamada, I ;

Azuma, M ;

Takano, M ;

Tokura, Y .

PHYSICAL REVIEW B, 2003, 67 (18)

[8] Magnetodielectric effects from spin fluctuations in isostructural ferromagnetic and antiferromagnetic systems [J].

Lawes, G ;

Ramirez, AP ;

Varma, CM ;

Subramanian, MA .

PHYSICAL REVIEW LETTERS, 2003, 91 (25)

[9] Ordering of polarons in the charge-disordered phase of Pr0.7Ca0.3MnO3 [J].

Levstik, A. ;

Filipic, C. ;

Bobnar, V. ;

Potocnik, A. ;

Arcon, D. ;

Drnovsek, S. ;

Holc, J. ;

Jaglicic, Z. .

PHYSICAL REVIEW B, 2009, 79 (15)

[10] Magnetodielectric effect in Bi2NiMnO6-La2NiMnO6 superlattices [J].

Padhan, P. ;

LeClair, P. ;

Gupta, A. ;

Subramanian, M. A. ;

Srinivasan, G. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2009, 21 (30)

← 1 2 →