Related Experiment Video
Updated: Jul 17, 2026
07:24
Quantitative Atomic-Site Analysis of Functional Dopants/Point Defects in Crystalline Materials by Electron-Channeling-Enhanced Microanalysis
Published on: May 10, 2021
Ca1.5 Eu3Sn0.5 O7: a calcium europium tin oxide with a novel structure
Yusuke Kaminaga1, Takahiro Yamada, Hisanori Yamane
1Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
Summary
Researchers synthesized a novel calcium europium tin heptaoxide compound using solid-state reactions. This new quaternary compound exhibits a unique crystal structure related to B-form Europium(III) oxide.
Area of Science:
- Solid-state chemistry
- Inorganic materials science
- Crystallography
Background:
- Quaternary oxides are crucial in materials science for their diverse properties.
- The Ca-Eu-Sn-O system is underexplored, presenting opportunities for new material discovery.
- Understanding structure-property relationships in complex oxides is vital for technological applications.
Purpose of the Study:
- To synthesize and characterize a new quaternary compound in the Ca-Eu-Sn-O system.
- To determine the crystal structure and atomic arrangement of the synthesized compound.
- To investigate the relationship of the new structure to known oxide structures.
Main Methods:
- Solid-state reaction at high temperatures (2073 K).
- X-ray diffraction for crystal structure determination.
- Analysis of atomic positions and coordination environments.
Main Results:
- Successful synthesis of calcium europium tin heptaoxide, Ca1.5Eu3Sn0.5O7.
- Determination of a new crystal structure type belonging to space group C2/m.
- Identification of specific atomic coordination sites, including octahedra, capped trigonal prisms, and five-coordinate sites.
Conclusions:
- A novel quaternary oxide, calcium europium tin heptaoxide, has been synthesized and structurally characterized.
- The crystal structure is a new type, related to the B-Eu2O3 structure.
- The detailed structural analysis provides a foundation for exploring the properties of this new material.
