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Combined HRTEM and High Spatial Resolution Analysis of Homologous Compounds InMO3(ZNO)m By A 300kv FE-TEM

Published online by Cambridge University Press:  02 July 2020

Yoshio Bando
Affiliation:
National Institute for Research in Inorganic Materials, 1-Namiki, tsukuba, Ibaraki, 305-0044, Japan
Chufei Li
Affiliation:
National Institute for Research in Inorganic Materials, 1-Namiki, tsukuba, Ibaraki, 305-0044, Japan
Masaki Nakamura
Affiliation:
National Institute for Research in Inorganic Materials, 1-Namiki, tsukuba, Ibaraki, 305-0044, Japan
Nobuo Kimizuka
Affiliation:
Universidad de Sonora, CIPM, Hermosilo, Sonora, C.P.83000, Mexico

Extract

A series of homologous compounds InMO3(ZnO)m (M=In, Fe, Ga and Al, m=integer) has been synthesized successfully by the present authors. From x-ray diffraction, the strutcure is considered to be a layered structure, consisting of InO2−1-(In-O layer) interleaved with M/ZnmOm−l1+ (M/Zn-O layer). The space group is assigned to be R3m when m is an odd number, while it is P63/mmc when m is an even number. The distribution of M atoms within the M/Zn-O layers is considered to be random. However, from electron microscopy study, the existence of the modulated structures showing non-integral periodicities has been observed. The high spatial resolution EDS analysis using 0.5 nm electron probe diameter under a 300kV FE-TEM showed that the sinusoidal modulated structure is caused by the ordering of M atoms within the M/Zn-O layers. In the present study, modulated structures of InMO3(ZnO)13, where M atoms consists of two metals such as In and Fe, Ga, Al and Fe are studied by combined use of HRTEM and high spatial resolution EDS analysis using a 300kV FE-TEM.

Type
Future of Microscopy: Ceramics, Composites, and Cement
Copyright
Copyright © Microscopy Society of America

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References

1.Nakamura, N., Mohri, T. and Nakamura, M., J. Solid State Chem., 81, 70 (1989)Google Scholar
2.Uchida, N., Bando, Y., Nakamura, M., and Kimizuka, N., J. Electrron Microsc, 43, 146 (1994)Google Scholar
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4.Li, C., Bando, Y., Nakamura, M. and Kimizuka, N., J. Solid State Chem., 139, 347 (1998),CrossRefGoogle Scholar
5.Li, C., Bando, Y., Nakamura, M. and Kimizuka, N., J. Sokid State Chem., 142, 174 (1999)CrossRefGoogle Scholar

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Combined HRTEM and High Spatial Resolution Analysis of Homologous Compounds InMO3(ZNO)m By A 300kv FE-TEM
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Combined HRTEM and High Spatial Resolution Analysis of Homologous Compounds InMO3(ZNO)m By A 300kv FE-TEM
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