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Molten-Salt Synthesis of Complex Metal Oxide Nanoparticles

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Published on: October 27, 2018

Disordered La3Cu4.88Se7.

L D Gulay¹, M Daszkiewicz, O M Strok

¹Department of Ecology and Protection of the Environment, Volyn National University, Lutsk, Ukraine.

Acta Crystallographica. Section C, Crystal Structure Communications

|March 4, 2011

Summary

This summary is machine-generated.

Researchers studied copper(I) lanthanum selenide, La(3)Cu(4.88)Se(7), revealing a crystal structure with ordered La and Se atoms. Partially occupied copper sites suggest a potential pathway for ionic diffusion.

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Growth and Electrostatic/chemical Properties of Metal/LaAlO3/SrTiO3 Heterostructures

Growth and Electrostatic/chemical Properties of Metal/LaAlO₃/SrTiO₃ Heterostructures

Published on: February 8, 2018

Area of Science:

Solid-state chemistry
Materials science
Crystallography

Background:

Lanthanum selenides and copper selenides are important in materials science.
Understanding the crystal structure of mixed lanthanum-copper selenides is crucial for their applications.

Purpose of the Study:

To determine the crystal structure of copper(I) lanthanum selenide, La(3)Cu(4.88)Se(7).
To investigate the atomic arrangement and potential for ionic diffusion within this compound.

Main Methods:

X-ray single-crystal diffraction was employed to analyze the crystal structure.
Analysis focused on the positions and occupancy of La, Cu, and Se atoms.

Main Results:

The crystal structure of La(3)Cu(4.88)Se(7) was elucidated.
Lanthanum and selenium atoms occupy ordered positions on mirror planes.
Copper atoms exhibit partial occupancy across five distinct crystallographic sites.
The structure is composed of edge-sharing [LaSe(6)] and [LaSe(7)] polyhedra.

Conclusions:

The partially occupied copper sites create potential pathways for ionic diffusion.
The determined crystal structure provides a foundation for understanding the properties and potential applications of this material.