Structural characterization of epitaxial LiFe5O8 thin films grown by chemical vapor deposition

被引：16

作者：

Loukya, B. ^{[1
,2
]}

Negi, D. S. ^{[1
,2
]}

Sahu, R. ^{[1
,2
]}

Pachauri, N. ^{[3
]}

Gupta, A. ^{[3
]}

Datta, R. ^{[1
,2
]}

机构：

[1] Jawaharlal Nehru Ctr Adv Sci Res, Int Ctr Mat Sci, Bangalore 560064, Karnataka, India

[2] Jawaharlal Nehru Ctr Adv Sci Res, Chem & Phys Mat Unit, Bangalore 560064, Karnataka, India

[3] Univ Alabama, Ctr Mat Informat Technol, Tuscaloosa, AL 35487 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2016年 / 668卷

基金：

美国国家科学基金会;

关键词：

Chemical vapor deposition; Epitaxial LiFe5O8 thin films; Structural ordering; Transmission electron microscopy; RAY-POWDER DIFFRACTION; LITHIUM FERRITE; GAMMA-FE2O3; SUPERSTRUCTURE; NIFE2O4; OXIDE;

D O I：

10.1016/j.jallcom.2016.01.217

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report on detailed microstructural and atomic ordering characterization by transmission electron microscopy in epitaxial LiFe5O8 (LFO) thin films grown by chemical vapor deposition (CVD) on MgO (001) substrates. The experimental results of LFO thin films are compared with those for bulk LFO single crystal. Electron diffraction studies indicate weak long-range ordering in LFO (alpha-phase) thin films in comparison to bulk crystal where strong ordering is observed in optimally annealed samples. The degree of long-range ordering depends on the growth conditions and the thickness of the film. Annealing experiment along with diffraction study confirms the formation of alpha-Fe2O3 phase in some regions of the films. This suggests that under certain growth conditions gamma-Fe2O3-like phase forms in some pockets in the as-grown LFO thin films that then convert to alpha-Fe2O3 on annealing. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：187 / 193

页数：7

共 50 条

[1] Epitaxial Growth of β-Bi2O3 Thin Films and Particles with Mist Chemical Vapor Deposition
Sun, Zaichun
Oka, Daichi
Fukumura, Tomoteru
CRYSTAL GROWTH & DESIGN, 2019, 19 (12) : 7170 - 7174
[2] Characterization of epitaxial Si films grown by atmospheric pressure plasma chemical vapor deposition using cylindrical rotary electrode
Yasutake, K
Ohmi, H
Kakiuchi, H
Wakamiya, T
Watanabe, H
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2006, 45 (4B): : 3592 - 3597
[3] Lattice dynamics of the α and β phases of LiFe5O8
Iliev, M. N.
Ivanov, V. G.
Todorov, N. D.
Marinova, V.
Abrashev, M. V.
Petrova, R.
Wang, Y-Q.
Litvinchuk, A. P.
PHYSICAL REVIEW B, 2011, 83 (17):
[4] REFINEMENT OF LiFe5O8 CRYSTAL STRUCTURE
Smolentsev, A. I.
Meshalkin, A. B.
Podberezskaya, N. V.
Kaplun, A. B.
JOURNAL OF STRUCTURAL CHEMISTRY, 2008, 49 (05) : 953 - 956
[5] Refinement of LiFe5O8 crystal structure
A. I. Smolentsev
A. B. Meshalkin
N. V. Podberezskaya
A. B. Kaplun
Journal of Structural Chemistry, 2008, 49
[6] Epitaxial germanium nanowires on GaAs grown by chemical vapor deposition
Kim, Yong
Song, Man Suk
Kim, Young Dae
Jung, Jae Hun
Gao, Q.
Tan, H. H.
Jagadish, C.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY, 2007, 51 (01) : 120 - 124
[7] Infrared response of α- and β-phases of LiFe5O8
Ivanov, V. G.
Litvinchuk, A. P.
Todorov, N. D.
Abrashev, M. V.
Marinova, V.
PHYSICAL REVIEW B, 2011, 84 (09):
[8] Characterization of chemical vapor deposition-grown graphene films with various etchants
Choi, HongKyw
Kim, Jong Yun
Jeong, Hu Young
Choi, Choon-Gi
Choi, Sung-Yool
CARBON LETTERS, 2012, 13 (01) : 44 - 47
[9] Cross-sectional transmission electron microscopy of thin graphite films grown by chemical vapor deposition
Colby, Robert
Yu, Qingkai
Cao, Helin
Pei, Steven S.
Stach, Eric A.
Chen, Yong P.
DIAMOND AND RELATED MATERIALS, 2010, 19 (2-3) : 143 - 146
[10] Nitrogen incorporation in SnO2 thin films grown by chemical vapor deposition
Jiang, Jie
Lu, Yinmei
Kramm, Benedikt
Michel, Fabian
Reindl, Christian T.
Kracht, Max E.
Klar, Peter J.
Meyer, Bruno K.
Eickhoff, Martin
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS, 2016, 253 (06): : 1087 - 1092

← 1 2 3 4 5 →