Large Enhancement of Magnetocaloric and Barocaloric Effects by Hydrostatic Pressure in La(Fe<sub>0.92</sub>Co<sub>0.08</sub>)<sub>11.9</sub>Si<sub>1.1</sub> with a NaZn<sub>13</sub>-Type Structure
Jiazheng Hao, Fengxia Hu, Jian-Tao Wang, Feiran Shen, Zibing Yu, Houbo Zhou, Hui Wu, Q. Huang, Kaiming Qiao, Jing Wang, Jun He, Lunhua He, Jirong Sun, Baogen Shen
Abstract
-type structure. First-principles calculations were performed, which offers a theoretical support for the enlarged caloric effect related to the evolution of phase transition nature. Moreover, the enhanced lattice entropy change was calculated by Debye approximation, and a reliable way to evaluate BCE is demonstrated under a high pressure that DSC cannot reach. The present study proves that remarkable caloric effect enhancement can be achieved through tackling specific atomic environments by physical pressure, which may also be used to tailor other pressure-related effects, such as controllable negative thermal expansion.