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Numerical Calculations

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In engineering applications, the representation of the numerical value is critical. Presenting or reporting the answer is one of the essential parts of engineering practices. Numerical calculations are performed using handheld calculators or computers since numerically accurate answers are always preferred.
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(Ca(x)Nd(11-x))Ru(4)O(24) (x = 4.175).

Terutoshi Sakakura¹, Keita Okada, Hironaga Iguchi

¹Ceramics Research Laboratory, Nagoya Institute of Technology, Asahigaoka, Tajimi 507-0071, Japan.

Acta Crystallographica. Section E, Structure Reports Online

|May 19, 2011

Summary

Single crystals of calcium neodymium ruthenate were grown, revealing a unique structure with isolated ruthenium-oxygen octahedra. This non-centrosymmetric material shows potential for multiferroic properties.

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Area of Science:

Solid State Chemistry
Materials Science
Crystallography

Background:

Calcium neodymium ruthenate, (Ca(x)Nd(11-x))Ru(4)O(24), is a complex oxide material.
Understanding the crystal structure and properties of such compounds is crucial for materials science applications.

Purpose of the Study:

To grow single crystals of calcium neodymium ruthenate.
To elucidate the crystal structure and determine the potential multiferroic properties of the title compound.

Main Methods:

Single crystals were successfully grown using the flux method.
Structural analysis was performed to understand atomic arrangements and site occupancies.

Main Results:

The crystal structure features isolated RuO(6) octahedra within a Ca and Nd atomic matrix.
Seven distinct M sites accommodate Ca and Nd atoms, with specific sites enriched in either Ca or Nd.
The mean oxidation state of ruthenium was determined to be +4.79.
The compound was identified as non-centrosymmetric, indicating potential multiferroic behavior.

Conclusions:

The flux method is effective for growing single crystals of calcium neodymium ruthenate.
The determined crystal structure provides insights into the arrangement of ruthenium, calcium, and neodymium ions.
The non-centrosymmetric nature suggests potential for multiferroic applications.