Related Experiment Video
Updated: Apr 1, 2026
08:49
Atomically Defined Templates for Epitaxial Growth of Complex Oxide Thin Films
Published on: December 4, 2014
14.9K
Sr5V1.5Fe3.5O15: A Transition-Metal-Ordered Perovskite with 5-Fold Superstructure along [111]pc Direction
Teppei Nagase1,2, Takumi Nishikubo1,3,4, Kei Shigematsu1,3,4
1Materials and Structures Laboratory, Institute of Integrated Research, Institute of Science Tokyo, Yokohama, Kanagawa 226-8501, Japan.
Inorganic Chemistry
|March 31, 2026
Summary
Researchers synthesized a novel 5-fold cation-ordered perovskite oxide, Sr5V1.5Fe3.5O15, preserving complex ordering from its precursor. This discovery advances understanding of complex perovskite structures and potential charge ordering phenomena.
Area of Science:
- Materials Science
- Solid-State Chemistry
- Crystallography
Background:
- Cation-ordered perovskites are typically rock-salt ordered double perovskites.
- Cation ordering with periodicity beyond three primitive perovskite cells is uncommon.
Purpose of the Study:
- To synthesize a novel 5-fold cation-ordered perovskite oxide.
- To investigate the preservation of cation ordering during synthesis.
Main Methods:
- Topochemical oxidation of Sr5V1.5Fe3.5O14 to Sr5V1.5Fe3.5O15.
- Synchrotron and neutron diffraction analyses to confirm structure.
- Mössbauer spectroscopy to investigate electronic properties.
Main Results:
- Successfully synthesized Sr5V1.5Fe3.5O15 with 5-fold cation ordering.
- Confirmed preservation of complex [111] layered ordering from precursor.
- Observed evidence of charge ordering (Fe3+/Fe4+) below 50 K.
Conclusions:
- Topochemical oxidation is effective for creating complex cation-ordered perovskites.
- The synthesized material exhibits potential for charge ordering phenomena.
- Further investigation into short-range order in iron-poor layers is warranted.
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