Chemical Diversity for Tailoring Negative Thermal Expansion

Area of Science:

• Solid-state chemistry
• Materials science
• Functional materials

Background:

• Negative thermal expansion (NTE) describes materials contracting upon heating, a phenomenon of significant interest.
• Understanding lattice response to temperature is crucial for material properties.
• Despite 30 years of research, intelligent design and efficient tailoring of NTE remain challenging.

Purpose of the Study:

• To provide a systematic overview of recent advancements in chemical diversity for tailoring NTE.
• To discuss efficient lattice control and in-depth structural analysis in NTE materials.
• To highlight the role of chemical diversity in creating functional zero-thermal-expansion (ZTE) compounds.

Main Methods:

• Review of diverse chemical synthesis routes for NTE compounds.
• Analysis of structure-property relationships in materials exhibiting NTE.
• Discussion of strategies for controlling lattice thermal expansion.

Main Results:

• Chemical diversity offers a wide range of strategies for synthesizing NTE compounds with desired properties.
• Flexible introduction methods and abundant structure-function insights accelerate the discovery of new NTE materials.
• Progress in lattice control and structural deciphering enhances the understanding of NTE mechanisms.

Conclusions:

• Chemical diversity is key to advancing the design and application of NTE materials.
• Further exploration of chemical routes will facilitate the creation of functional ZTE materials.
• This review provides a perspective for future research in NTE and ZTE materials.