Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite

R. X. Silva; H. Reichlova; X. Marti; D. A. B. Barbosa; M. W. Lufaso; B. S. Araujo; A. P. Ayala; C. W. A. Paschoal

doi:10.1063/1.4829902

Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite

R. X. Silva, H. Reichlova, X. Marti, D. A. B. Barbosa, M. W. Lufaso, B. S. Araujo, A. P. Ayala, C. W. A. Paschoal

Federal University of Ceará

Research output: Contribution to journal › Article › peer-review

Abstract

We have investigated the temperature-dependent Raman-active phonons and the magnetic properties of Gd(Co1/2Mn1/2)O3 perovskite ceramics in the temperature range from 40 K to 300 K. The samples crystallized in an orthorhombic distorted simple perovskite, whose symmetry belongs to the Pnma space group. The data reveal spin-phonon coupling near the ferromagnetic transition occurring at around 120 K. The correlation of the Raman and magnetization data suggests that the structural order influences the magnitude of the spin-phonon coupling.

Original language	American English
Article number	194102
Journal	Journal of Applied Physics
Volume	114
Issue number	19
DOIs	https://doi.org/10.1063/1.4829902
State	Published - Nov 15 2013

Keywords

Magnetic ordering
Phase transitions
Phonons
Raman spectroscopy
Perovskites
Thin films
Ceramics
Group theory
Minerals
Renormalization and regularization

Disciplines

Atomic, Molecular and Optical Physics
Physics
Quantum Physics
Condensed Matter Physics

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Cite this

@article{5d33e9501a8f43c49ccc78e0c05b7b3e,

title = "Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite",

abstract = "We have investigated the temperature-dependent Raman-active phonons and the magnetic properties of Gd(Co1/2Mn1/2)O3 perovskite ceramics in the temperature range from 40 K to 300 K. The samples crystallized in an orthorhombic distorted simple perovskite, whose symmetry belongs to the Pnma space group. The data reveal spin-phonon coupling near the ferromagnetic transition occurring at around 120 K. The correlation of the Raman and magnetization data suggests that the structural order influences the magnitude of the spin-phonon coupling.",

keywords = "Magnetic ordering, Phase transitions, Phonons, Raman spectroscopy, Perovskites, Thin films, Ceramics, Group theory, Minerals, Renormalization and regularization",

author = "Silva, {R. X.} and H. Reichlova and X. Marti and Barbosa, {D. A. B.} and Lufaso, {M. W.} and Araujo, {B. S.} and Ayala, {A. P.} and Paschoal, {C. W. A.}",

note = "R. X. Silva, H. Reichlova, X. Marti, D. A. B. Barbosa, M. W. Lufaso, B. S. Araujo, A. P. Ayala, C. W. A. Paschoal; Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite. J. Appl. Phys. 21 November 2013; 114 (19): 194102. https://doi.org/10.1063/1.4829902",

year = "2013",

month = nov,

day = "15",

doi = "10.1063/1.4829902",

language = "American English",

volume = "114",

journal = "Journal of Applied Physics",

issn = "1089-7550",

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TY - JOUR

T1 - Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite

AU - Silva, R. X.

AU - Reichlova, H.

AU - Marti, X.

AU - Barbosa, D. A. B.

AU - Lufaso, M. W.

AU - Araujo, B. S.

AU - Ayala, A. P.

AU - Paschoal, C. W. A.

N1 - R. X. Silva, H. Reichlova, X. Marti, D. A. B. Barbosa, M. W. Lufaso, B. S. Araujo, A. P. Ayala, C. W. A. Paschoal; Spin-phonon coupling in Gd(Co1/2Mn1/2)O3 perovskite. J. Appl. Phys. 21 November 2013; 114 (19): 194102. https://doi.org/10.1063/1.4829902

PY - 2013/11/15

Y1 - 2013/11/15

N2 - We have investigated the temperature-dependent Raman-active phonons and the magnetic properties of Gd(Co1/2Mn1/2)O3 perovskite ceramics in the temperature range from 40 K to 300 K. The samples crystallized in an orthorhombic distorted simple perovskite, whose symmetry belongs to the Pnma space group. The data reveal spin-phonon coupling near the ferromagnetic transition occurring at around 120 K. The correlation of the Raman and magnetization data suggests that the structural order influences the magnitude of the spin-phonon coupling.

AB - We have investigated the temperature-dependent Raman-active phonons and the magnetic properties of Gd(Co1/2Mn1/2)O3 perovskite ceramics in the temperature range from 40 K to 300 K. The samples crystallized in an orthorhombic distorted simple perovskite, whose symmetry belongs to the Pnma space group. The data reveal spin-phonon coupling near the ferromagnetic transition occurring at around 120 K. The correlation of the Raman and magnetization data suggests that the structural order influences the magnitude of the spin-phonon coupling.

KW - Magnetic ordering

KW - Phase transitions

KW - Phonons

KW - Raman spectroscopy

KW - Perovskites

KW - Thin films

KW - Ceramics

KW - Group theory

KW - Minerals

KW - Renormalization and regularization

U2 - 10.1063/1.4829902

DO - 10.1063/1.4829902

M3 - Article

SN - 1089-7550

VL - 114

JO - Journal of Applied Physics

JF - Journal of Applied Physics

IS - 19

M1 - 194102

ER -