Effect of annealing on Curie temperature and phase transition in La0.55Sr0.08Mn0.37O3 epitaxial films grown on SrTiO3 (100) substrates by reactive radio frequency magnetron sputtering

T. Ichinose; H. Naganuma; T. Miyazaki; M. Oogane; Y. Ando; T. Ueno; N. Inami; K. Ono

doi:10.1016/j.matchar.2016.05.002

Effect of annealing on Curie temperature and phase transition in La_0.55Sr_0.08Mn_0.37O₃ epitaxial films grown on SrTiO₃ (100) substrates by reactive radio frequency magnetron sputtering

T. Ichinose, H. Naganuma, T. Miyazaki, M. Oogane, Y. Ando, T. Ueno, N. Inami, K. Ono

ENG - Applied Physics

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

6 Citations (Scopus)

Abstract

Mn-poor LaSrMnO₃ (LSMO) epitaxial films were grown on SrTiO₃ (100) substrates by radio frequency magnetron sputtering in an argon and oxygen gas mix, and then the samples were annealed in air at various temperatures (T_a). 2 theta-chi X-ray diffraction mapping, nano-beam diffraction analysis through transmission electron microscopy, and electron back scatter diffraction through scanning electron microscopy revealed that the crystal symmetry of the LSMO films changed from monoclinic/orthorhombic to rhombohedral on annealing in air. Curie temperature (T_C) of the LSMO films was found to increase with increasing T_a, and become higher than the room temperature at T_a ≥ 861 °C, indicating that the cause of these changes was the filling of oxygen and the transition of the crystal symmetry into rhombohedral.

Original language	English
Pages (from-to)	37-43
Number of pages	7
Journal	Materials Characterization
Volume	118
DOIs	https://doi.org/10.1016/j.matchar.2016.05.002
Publication status	Published - 2016 Aug 1

Keywords

Currie temperature
Epitaxial
LSMO
Mn-poor
Monoclinic
Rhombohedral
Sputtering

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Access to Document

10.1016/j.matchar.2016.05.002

Cite this

Ichinose, T., Naganuma, H., Miyazaki, T., Oogane, M., Ando, Y., Ueno, T., Inami, N., & Ono, K. (2016). Effect of annealing on Curie temperature and phase transition in La_0.55Sr_0.08Mn_0.37O₃ epitaxial films grown on SrTiO₃ (100) substrates by reactive radio frequency magnetron sputtering. Materials Characterization, 118, 37-43. https://doi.org/10.1016/j.matchar.2016.05.002

Ichinose, T, Naganuma, H, Miyazaki, T, Oogane, M , Ando, Y, Ueno, T, Inami, N & Ono, K 2016, 'Effect of annealing on Curie temperature and phase transition in La_0.55Sr_0.08Mn_0.37O₃ epitaxial films grown on SrTiO₃ (100) substrates by reactive radio frequency magnetron sputtering', Materials Characterization, vol. 118, pp. 37-43. https://doi.org/10.1016/j.matchar.2016.05.002

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title = "Effect of annealing on Curie temperature and phase transition in La0.55Sr0.08Mn0.37O3 epitaxial films grown on SrTiO3 (100) substrates by reactive radio frequency magnetron sputtering",

abstract = "Mn-poor LaSrMnO3 (LSMO) epitaxial films were grown on SrTiO3 (100) substrates by radio frequency magnetron sputtering in an argon and oxygen gas mix, and then the samples were annealed in air at various temperatures (Ta). 2 theta-chi X-ray diffraction mapping, nano-beam diffraction analysis through transmission electron microscopy, and electron back scatter diffraction through scanning electron microscopy revealed that the crystal symmetry of the LSMO films changed from monoclinic/orthorhombic to rhombohedral on annealing in air. Curie temperature (TC) of the LSMO films was found to increase with increasing Ta, and become higher than the room temperature at Ta ≥ 861 °C, indicating that the cause of these changes was the filling of oxygen and the transition of the crystal symmetry into rhombohedral.",

keywords = "Currie temperature, Epitaxial, LSMO, Mn-poor, Monoclinic, Rhombohedral, Sputtering",

author = "T. Ichinose and H. Naganuma and T. Miyazaki and M. Oogane and Y. Ando and T. Ueno and N. Inami and K. Ono",

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AU - Ichinose, T.

AU - Naganuma, H.

AU - Miyazaki, T.

AU - Oogane, M.

AU - Ando, Y.

AU - Ueno, T.

AU - Inami, N.

AU - Ono, K.

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N2 - Mn-poor LaSrMnO3 (LSMO) epitaxial films were grown on SrTiO3 (100) substrates by radio frequency magnetron sputtering in an argon and oxygen gas mix, and then the samples were annealed in air at various temperatures (Ta). 2 theta-chi X-ray diffraction mapping, nano-beam diffraction analysis through transmission electron microscopy, and electron back scatter diffraction through scanning electron microscopy revealed that the crystal symmetry of the LSMO films changed from monoclinic/orthorhombic to rhombohedral on annealing in air. Curie temperature (TC) of the LSMO films was found to increase with increasing Ta, and become higher than the room temperature at Ta ≥ 861 °C, indicating that the cause of these changes was the filling of oxygen and the transition of the crystal symmetry into rhombohedral.

AB - Mn-poor LaSrMnO3 (LSMO) epitaxial films were grown on SrTiO3 (100) substrates by radio frequency magnetron sputtering in an argon and oxygen gas mix, and then the samples were annealed in air at various temperatures (Ta). 2 theta-chi X-ray diffraction mapping, nano-beam diffraction analysis through transmission electron microscopy, and electron back scatter diffraction through scanning electron microscopy revealed that the crystal symmetry of the LSMO films changed from monoclinic/orthorhombic to rhombohedral on annealing in air. Curie temperature (TC) of the LSMO films was found to increase with increasing Ta, and become higher than the room temperature at Ta ≥ 861 °C, indicating that the cause of these changes was the filling of oxygen and the transition of the crystal symmetry into rhombohedral.

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KW - Monoclinic

KW - Rhombohedral

KW - Sputtering

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