Magnetic Glassy Behavior of Pr0.6Ca0.4MnO3 Nanoparticles: Effect of Intra and Interparticle Magnetic Interactions on Magnetodielectric Property

被引：4

作者：

Chandrasekhar, K. Devi ^{[1
,2
,3
]}

Das, A. K. ^{[1
]}

Venimadhav, A. ^{[4
]}

机构：

[1] Indian Inst Technol, Dept Phys, Kharagpur 721302, W Bengal, India

[2] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan

[3] Natl Sun Yat Sen Univ, Ctr Nanosci & Nanotechnol, Kaohsiung 804, Taiwan

[4] Indian Inst Technol, Cryogen Engn Ctr, Kharagpur 721302, W Bengal, India

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 48期

关键词：

CHARGE;

D O I：

10.1021/jp508918u

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Studies of the dc and ac magnetization on Pr0.6Ca0.4MnO3 (PCMO) nanoparticles indicate the metastable magnetic behavior with random ferromagnetic and antiferromagnetic interactions that led to spin glass (SG) behavior below 90 K. Magnetodielectric (MD) effect has been investigated by dispersing the SG PCMO nanoparticles in a polyvinylidene fluoride (PVDF) matrix. It is found that for low volume fraction of PCMO the MD varies as M-2, which indicates the intrinsic magnetoelectric (ME) coupling in PCMO nanoparticles. For higher volume fractions (above the percolation threshold) MD goes with the M-4. The magnetization along with microstructural investigations suggested the significant role of inter/intraclusters magnetic interactions on MD property.

引用

页码：27728 / 27734

页数：7

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