Raman studies of spin-phonon coupling in hexagonal BaFe12O19

被引：52

作者：

Chen, Xiang-Bai ^{[1
,2
]}

Nguyen Thi Minh Hien ^{[3
,4
]}

Han, Kiok ^{[3
,4
]}

Sur, Jung Chul ^{[5
]}

Sung, N. H. ^{[6
]}

Cho, B. K. ^{[6
,7
]}

Yang, In-Sang ^{[3
,4
]}

机构：

[1] Konkuk Univ, Dept Nano Sci & Mech Engn, Chungju 380701, South Korea

[2] Konkuk Univ, Nanotechnol Res Ctr, Chungju 380701, South Korea

[3] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea

[4] Ewha Womans Univ, Div Nano Sci, Seoul 120750, South Korea

[5] Wonkwang Univ, Div Microelect & Display Technol, Iksan 570749, South Korea

[6] GIST, Sch Mat Sci & Engn, Kwangju 500712, South Korea

[7] GIST, Dept Photon & Appl Phys, Kwangju 500712, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 114卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

BARIUM; NANOPARTICLES; SPECTRUM; FERRITE;

D O I：

10.1063/1.4812575

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Phonon softening in hexagonal BaFe12O19 single crystal is observed in temperature dependent polarized Raman spectroscopy. The phonon softening is significantly enhanced below similar to 80K, at which the magnetization in a magnetic field along c-axis shows a clear change in the temperature dependence, indicating a magnetic phase transition near 80K. Possible interpretations of the anomalous temperature dependence of the phonon frequencies-phonon softening behaviors are discussed. The phonon softening would be correlated to local structural and magnetic phase transition in hexagonal BaFe12O19, in which the spin-phonon coupling would have major contribution for the phonon softening. We also discuss that the spin-phonon coupling would be affected by both the spin ordering and the individual phonon vibration in magnetic material. (C) 2013 AIP Publishing LLC.

引用

页数：6

共 60 条

[1] Spin-phonon coupling in frustrated magnet CdCr2O4 [J].

Aguilar, R. Valdes ;

Sushkov, A. B. ;

Choi, Y. J. ;

Cheong, S. -W. ;

Drew, H. D. .

PHYSICAL REVIEW B, 2008, 77 (09)

[2]

BALTENSPERGER W, 1968, HELV PHYS ACTA, V41, P668

[3]

BRAUN PB, 1957, PHILIPS RES REP, V0012

[4] In-plane spin reorientation transition in ultrathin epitaxial Fe(001) films [J].

Brockmann, M ;

Miethaner, S ;

Onderka, R ;

Kohler, M ;

Himmelhuber, F ;

Regensburger, H ;

Bensch, F ;

Schweinbock, T ;

Bayreuther, G .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5047-5049

[5]

Buchner W., 1989, Industrial Inorganic Chemistry

[6] Giant Electrothermal Conductivity and Spin-Phonon Coupling in an Antiferromagnetic Oxide [J].

Chiorescu, C. ;

Neumeier, J. J. ;

Cohn, J. L. .

PHYSICAL REVIEW LETTERS, 2008, 101 (25)

[7] Phonon anomalies and phonon-spin coupling in oriented PbFe0.5Nb0.5O3 thin films [J].

Correa, Margarita ;

Kumar, Ashok ;

Priya, Shashank ;

Katiyar, R. S. ;

Scott, J. F. .

PHYSICAL REVIEW B, 2011, 83 (01)

[8] Anharmonic phonons and magnons in BiFeO3 [J].

Delaire, O. ;

Stone, M. B. ;

Ma, J. ;

Huq, A. ;

Gout, D. ;

Brown, C. ;

Wang, K. F. ;

Ren, Z. F. .

PHYSICAL REVIEW B, 2012, 85 (06)

[9] Magnetic and Mossbauer investigation of Sc- and In-substituted PbFe12O19 hexaferrites [J].

Díaz-Castañón, S ;

Leccabue, F ;

Watts, BE ;

Albanese, G .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 196 :458-460

[10] Spin-phonon coupling and magnetoelectric properties: EuMnO3 versus GdMnO3 [J].

Ferreira, W. S. ;

Moreira, J. Agostinho ;

Almeida, A. ;

Chaves, M. R. ;

Araujo, J. P. ;

Oliveira, J. B. ;

Da Silva, J. M. Machado ;

Sa, M. A. ;

Mendonca, T. M. ;

Carvalho, P. Simeao ;

Kreisel, J. ;

Ribeiro, J. L. ;

Vieira, L. G. ;

Tavares, P. B. ;

Mendonca, S. .

PHYSICAL REVIEW B, 2009, 79 (05)

← 1 2 3 4 5 6 →