Structural Behavior of the Sb-doped Magnetocaloric Candidate CrNiP
Disciplines
Chemistry | Inorganic Chemistry | Materials Chemistry
Abstract (300 words maximum)
The magnetocaloric effect, a thermodynamic phenomenon, can provide a more efficient and environmentally friendly route for cooling technology compared to traditional compressor-based systems. The rare-earth free MM'X alloys where M and M' = transition metal and X = main group element, have received much attention as excellent magnetocaloric candidates. These materials can exhibit a strong magnetostructural coupling resulting in a large entropy change typically over a wide temperature range, optimal for magnetic refrigeration. Based on recent theoretical work, the MM'X alloy CrNiP has been predicted to be a promising magnetocaloric material. In this talk I will present the synthetic methods and structural analysis of Sb doped CrNiP from powder X-ray diffraction techniques. With only a small percentage of Sb dopant into CrNiP we see the material begin to transition from the orthorhombic TiNiSi-type to the hexagonal Ni2In-type structure. As a result, chemical pressure can be used to tune the structural variation in the MM'X alloy CrNiP. This will provide a unique tool to tailor the potential magnetocaloric effect which will be investigated in our future studies.
Academic department under which the project should be listed
CSM - Chemistry and Biochemistry
Primary Investigator (PI) Name
Madalynn Marshall
Structural Behavior of the Sb-doped Magnetocaloric Candidate CrNiP
The magnetocaloric effect, a thermodynamic phenomenon, can provide a more efficient and environmentally friendly route for cooling technology compared to traditional compressor-based systems. The rare-earth free MM'X alloys where M and M' = transition metal and X = main group element, have received much attention as excellent magnetocaloric candidates. These materials can exhibit a strong magnetostructural coupling resulting in a large entropy change typically over a wide temperature range, optimal for magnetic refrigeration. Based on recent theoretical work, the MM'X alloy CrNiP has been predicted to be a promising magnetocaloric material. In this talk I will present the synthetic methods and structural analysis of Sb doped CrNiP from powder X-ray diffraction techniques. With only a small percentage of Sb dopant into CrNiP we see the material begin to transition from the orthorhombic TiNiSi-type to the hexagonal Ni2In-type structure. As a result, chemical pressure can be used to tune the structural variation in the MM'X alloy CrNiP. This will provide a unique tool to tailor the potential magnetocaloric effect which will be investigated in our future studies.