Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Search research articles

Related Experiment Videos

Structure and phase transitions in Ca2CoSi2O7-Ca2ZnSi2O7 solid-solution crystals.

Z H Jia¹, A K Schaper, W Massa

¹Department of Geosciences, Material Sciences Center, Philipps University Marburg, Hans-Meerwein-Strasse, D-35032 Marburg, Germany.

Acta Crystallographica. Section B, Structural Science

|July 15, 2006

Summary

This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Isomer Depletion of ^{93m}Mo Triggered by Inelastic Nuclear Scattering Rather than Nuclear Excitation by Electron Capture.

Physical review letters·2026

Same author

[Progress of radical resection of pancreatic cancer].

Zhonghua wai ke za zhi [Chinese journal of surgery]·2023

Same author

[Long-term efficacy of low-dose rituximab treatment in patients with primary membranous nephropathy].

Zhonghua yi xue za zhi·2022

Same author

Probing ^{93m}Mo Isomer Depletion with an Isomer Beam.

Physical review letters·2022

Same author

An electromagnetic separation system for the enrichment of <sup>39</sup>Ar.

The Review of scientific instruments·2020

Same author

A new room temperature LECR5 ion source for the SESRI project.

The Review of scientific instruments·2020

Same journal

A Description of the Techniques and Application of Molecular Replacement Used to Determine the Structure of Polyoma Virus Capsid at 22.5 Å Resolution.

Acta crystallographica. Section B, Structural science·2014

Same journal

On the shortest B(III)-O bonds.

Acta crystallographica. Section B, Structural science·2013

Same journal

A high-pressure polymorph of chlorpropamide formed on hydrostatic compression of the α-form in saturated ethanol solution.

Acta crystallographica. Section B, Structural science·2013

Same journal

Thermodynamic and structural relationships between the two polymorphs of 1,3-dimethylurea.

Acta crystallographica. Section B, Structural science·2013

Same journal

Entry point into new trimeric and tetrameric imide-based macrocyclic esters derived from isophthaloyl dichloride and methyl 6-aminonicotinate.

Acta crystallographica. Section B, Structural science·2013

Same journal

Structural and electronic aspects of hydrogen bonding in two polymorphs of butylene-N,N'-bis(O,O'-diarylphosphoramidate).

Acta crystallographica. Section B, Structural science·2013

See all related articles

The study clarifies melilite incommensurability, revealing how zinc substitution affects phase transitions. Increasing zinc content lowers transition temperatures in the Ca(2)Co(1-x)Zn(x)Si(2)O(7) system.

Area of Science:

Solid-state chemistry
Crystallography
Materials science

Background:

Melilites exhibit incommensurate structures, but atomic details and phase behavior remain unclear.
Understanding composition-dependent phase transitions is crucial for materials design.

Purpose of the Study:

Investigate the incommensurate-normal (IC-N) and incommensurate-commensurate (IC-C) phase transitions in Ca(2)Co(1-x)Zn(x)Si(2)O(7).
Determine the atomic configurations and superstructure of the commensurate phase.
Analyze the effect of zinc substitution on transition temperatures.

Main Methods:

X-ray diffraction
Single-crystal electron diffraction
Calorimetric measurements

Related Experiment Videos

Main Results:

The normal and basic incommensurate phases belong to space group P42(1)m.
The commensurate lock-in superstructure was refined in space group P2(1)2(1)2.
Commensurate modulation involves sawtooth rotations of T(1) tetrahedra, forming imperfect octagons due to incomplete Ca(2+) clustering.
Increasing Zn substitution progressively lowers IC-N and IC-C transition temperatures.

Conclusions:

The study elucidates the atomic structure and phase transitions in the Ca(2)Co(1-x)Zn(x)Si(2)O(7) melilite system.
Zinc substitution acts as a chemical pressure, reducing transition temperatures and stabilizing phases.
Detailed structural insights provide a foundation for predicting and controlling melilite properties.