AUTHOR=Hu Fengxia , Shen Feiran , Hao Jiazheng , Liu Yao , Wang Jing , Sun Jirong , Shen Baogen 

TITLE=Negative Thermal Expansion in the Materials With Giant Magnetocaloric Effect

JOURNAL=Frontiers in Chemistry

VOLUME=6

YEAR=2018

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2018.00438

DOI=10.3389/fchem.2018.00438

ISSN=2296-2646

ABSTRACT=<p>Negative thermal expansion (NTE) behaviors in the materials with giant magnetocaloric effects (MCE) have been reviewed. Attentions are mainly focused on the hexagonal Ni<sub>2</sub>In-type MM'X compounds. Other MCE materials, such as La(Fe,Si)<sub>13</sub>, RCo<sub>2</sub>, and antiperovskite compounds are also simply introduced. The novel MCE and phase-transition-type NTE materials have similar physics origin though the applications are distinct. Spin-lattice coupling plays a key role for the both effect of NTE and giant MCE. Most of the giant MCE materials show abnormal lattice expansion owing to magnetic interactions, which provides a natural platform for exploring NTE materials. We anticipate that the present review can help finding more ways to regulate phase transition and dig novel NTE materials.</p>