Magnetoelastoelectric coupling in core-shell nanoparticles enabling directional and mode-selective magnetic control of THz beam propagation

被引：9

作者：

Dutta, Moumita ^{[1
]}

Natarajan, Kamaraju ^{[2
,3
]}

Betal, Soutik ^{[1
]}

Prasankumar, Rohit P. ^{[2
]}

Bhalla, Amar S. ^{[1
]}

Guo, Ruyan ^{[1
]}

机构：

[1] Univ Texas San Antonio, Dept Elect & Comp Engn, San Antonio, TX 78249 USA

[2] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87544 USA

[3] Indian Inst Sci Educ & Res Kolkata, Dept Phys Sci, Kolkata, India

来源：

NANOSCALE | 2017年 / 9卷 / 35期

基金：

美国国家卫生研究院; 美国国家科学基金会;

关键词：

Amplitude modulation - Ferroelectricity - Nanomagnetics - Shells (structures) - Barium titanate - Phase modulation - Core shell nanoparticles - Terahertz waves - Crystallography - Magnetic fields - Wave propagation - Strontium titanates;

D O I：

10.1039/c7nr03504g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Magnetoelastoelectric coupling in an engineered biphasic multiferroic nanocomposite enables a novel magnetic field direction-defined propagation control of terahertz (THz) waves. These core-shell nanoparticles are comprised of a ferromagnetic cobalt ferrite core and a ferroelectric barium titanate shell. An assembly of these nanoparticles, when operated in external magnetic fields, exhibits a controllable amplitude modulation when the magnetic field is applied antiparallel to the THz wave propagation direction; yet the same assembly displays an additional phase modulation when the magnetic field is applied along the propagation direction. While field-induced magnetostriction of the core leads to amplitude modulation, phase modulation is a result of stress-mediated piezoelectricity of the outer ferroelectric shell.

引用

页码：13052 / 13059

页数：8

共 41 条

[1]

[Anonymous], 2005, PROPERTIES MAT

[2]

Bordács S, 2012, NAT PHYS, V8, P734, DOI [10.1038/NPHYS2387, 10.1038/nphys2387]

[3] Directly probing spin dynamics in insulating antiferromagnets using ultrashort terahertz pulses [J].

Bowlan, P. ;

Trugman, S. A. ;

Wang, X. ;

Dai, Y. M. ;

Cheong, S. -W. ;

Bauer, E. D. ;

Taylor, A. J. ;

Yarotski, D. A. ;

Prasankumar, R. P. .

PHYSICAL REVIEW B, 2016, 94 (18)

[4] Probing ultrafast spin dynamics through a magnon resonance in the antiferromagnetic multiferroic HoMnO3 [J].

Bowlan, P. ;

Trugman, S. A. ;

Bowlan, J. ;

Zhu, J. -X. ;

Hur, N. J. ;

Taylor, A. J. ;

Yarotski, D. A. ;

Prasankumar, R. P. .

PHYSICAL REVIEW B, 2016, 94 (10)

[5] Terahertz electro-optic properties of PbZr0.52Ti0.48O3 and BaTiO3 ferroelectric thin films [J].

Chen, Lei ;

Zhang, Yuan ;

Guo, Quan ;

Zhang, Dongwen ;

Zhong, Xiangli ;

Yuan, Jianmin .

APPLIED PHYSICS LETTERS, 2014, 105 (11)

[6] Tunable optical and magneto-optical properties of ferrofluid in the terahertz regime [J].

Chen, Sai ;

Fan, Fei ;

Chang, Shengjiang ;

Miao, Yinping ;

Chen, Meng ;

Li, Jining ;

Wang, Xianghui ;

Lin, Lie .

OPTICS EXPRESS, 2014, 22 (06) :6313-6321

[7] Terahertz fields and applications [J].

Dragoman, D ;

Dragoman, M .

PROGRESS IN QUANTUM ELECTRONICS, 2004, 28 (01) :1-66

[8] Low frequency piezoresonance defined dynamic control of terahertz wave propagation [J].

Dutta, Moumita ;

Betal, Soutik ;

Peralta, Xomalin G. ;

Bhalla, Amar S. ;

Guo, Ruyan .

SCIENTIFIC REPORTS, 2016, 6

[9] Multiferroic and magnetoelectric materials [J].

Eerenstein, W. ;

Mathur, N. D. ;

Scott, J. F. .

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

[10] Magnetically tunable terahertz magnetoplasmons in ferrofluid-filled photonic crystals [J].

Fan, Fei ;

Chen, Sai ;

Lin, Wei ;

Miao, Yin-Ping ;

Chang, Sheng-Jiang ;

Liu, Bo ;

Wang, Xiang-Hui ;

Lin, Lie .

APPLIED PHYSICS LETTERS, 2013, 103 (16)

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