Coherent magnon and acoustic phonon dynamics in tetragonal and rare-earth-doped BiFeO3 multiferroic thin films

被引：22

作者：

Doig, K. I. ^{[1
]}

Aguesse, F. ^{[2
]}

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

Alford, N. M. ^{[2
]}

Nawaz, S. ^{[3
]}

Palkar, V. R. ^{[3
]}

Jones, S. P. P. ^{[1
]}

Johnson, R. D. ^{[1
]}

Synowicki, R. A. ^{[4
]}

Lloyd-Hughes, J. ^{[1
,5
]}

机构：

[1] Univ Oxford, Dept Phys, Clarendon Lab, Oxford OX1 3PU, England

[2] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[3] Indian Inst Technol, Bombay 400076, Maharashtra, India

[4] JA Woollam Co Inc, Lincoln, NE 68508 USA

[5] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

来源：

PHYSICAL REVIEW B | 2013年 / 88卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

TEMPERATURE;

D O I：

10.1103/PhysRevB.88.094425

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Coherent magnons and acoustic phonons were impulsively excited and probed in thin films of the room temperature multiferroic Bi1-x-yDyxLayFeO3 using femtosecond laser pulses. The elastic moduli of rhombohedral, tetragonal, and rare-earth doped BiFeO3 were determined from acoustic-mode frequencies in conjunction with spectroscopic ellipsometry. A weak ferromagnetic order, induced alternately by magnetization in the growth direction or by tetragonality, created a magnon oscillation at 75 GHz, indicative of a Dzyaloshinskii-Moriya interaction energy of 0.31 meV.

引用

页数：8

共 44 条

[1] Multiferroics:: Towards a magnetoelectric memory [J].

Bibes, Manuel ;

Barthelemy, Agnes .

NATURE MATERIALS, 2008, 7 (06) :425-426

[2] Observation of anomalous acoustic phonon dispersion in SrTiO3 by broadband stimulated Brillouin scattering [J].

Brivio, S. ;

Polli, D. ;

Crespi, A. ;

Osellame, R. ;

Cerullo, G. ;

Bertacco, R. .

APPLIED PHYSICS LETTERS, 2011, 98 (21)

[3] Elastic relaxations associated with the Pm(3)over-barm-R(3)over-barc transition in LaAlO3: I. Single crystal elastic moduli at room temperature [J].

Carpenter, M. A. ;

Sinogeikin, S. V. ;

Bass, J. D. ;

Lakshtanov, D. L. ;

Jacobsen, S. D. .

JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (03)

[4] Physics and Applications of Bismuth Ferrite [J].

Catalan, Gustau ;

Scott, James F. .

ADVANCED MATERIALS, 2009, 21 (24) :2463-2485

[5] Possible observation of cycloidal electromagnons in BiFeO3 [J].

Cazayous, M. ;

Gallais, Y. ;

Sacuto, A. ;

de Sousa, R. ;

Lebeugle, D. ;

Colson, D. .

PHYSICAL REVIEW LETTERS, 2008, 101 (03)

[6] Ultrafast photoinduced mechanical strain in epitaxial BiFeO3 thin films [J].

Chen, L. Y. ;

Yang, J. C. ;

Luo, C. W. ;

Laing, C. W. ;

Wu, K. H. ;

Lin, J-Y ;

Uen, T. M. ;

Juang, J. Y. ;

Chu, Y. H. ;

Kobayashi, T. .

APPLIED PHYSICS LETTERS, 2012, 101 (04)

[7] Ultrafast Dynamics of BiFeO3 Thin Films Studied by Dual-Color Femtosecond Spectroscopy [J].

Chen, L. Y. ;

Yang, J. C. ;

Shih, H. C. ;

Liang, C. W. ;

Wu, T. -Y. ;

Chou, S. K. ;

Luo, C. W. ;

Wu, K. H. ;

Chu, Y. H. ;

Kobayashi, T. .

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, 2011, 24 (1-2) :731-734

[8] The role of 4f-electron on spin reorientation transition of NdFeO3: A first principle study [J].

Chen, La ;

Li, Tongwei ;

Cao, Shixun ;

Yuan, Shujuan ;

Hong, Feng ;

Zhang, Jincang .

JOURNAL OF APPLIED PHYSICS, 2012, 111 (10)

[9] Optical properties of quasi-tetragonal BiFeO3 thin films [J].

Chen, P. ;

Podraza, N. J. ;

Xu, X. S. ;

Melville, A. ;

Vlahos, E. ;

Gopalan, V. ;

Ramesh, R. ;

Schlom, D. G. ;

Musfeldt, J. L. .

APPLIED PHYSICS LETTERS, 2010, 96 (13)

[10] Multiferroics: a magnetic twist for ferroelectricity [J].

Cheong, Sang-Wook ;

Mostovoy, Maxim .

NATURE MATERIALS, 2007, 6 (01) :13-20

← 1 2 3 4 5 →