Strain Engineering of Magnetocaloric Effect in Fe
Graduate Category: Engineering and Technology Degree Seeking: Ph.D. Abstract ID# 1715
Exploring Sustainable Pathways for Realization of Magnetic Cooling Technology: Strain Engineering of Magnetocaloric Effect in FeRh Xiaoyu Zhang, Radhika Barua and Laura H. Lewis Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, 02115, USA
Emerging Technology: Magnetic Cooling2
Research Motivation: Next Generation of Cooling Vapor compression system has served for cooling application for about 100 years. However, this conventional refrigeration has high energy consumption and detrimental effects on environments.1
Magnetic cooling is an emerging technology based on Magnetocaloric Effect (MCE). • MCE: reversible temperature change of magnetic materials upon application and removal of a magnetic field.
2013 U.S. Primary Energy Consumption in Residential and Commercial Sectors
Others 72%
Cooling applications 28%
Major classes of Drawbacks Air refrigerants conditioning CFCs and HCFCs Contributions to the depletion 16% ozone layer HFCs High global warming potential Ventilation (GWP) 5% Other Have varying degrees of Refrigeration alternatives flammability, toxicity and GWP 7%
Overall: 35.08 Quads/year
• Hypothesis: The magnetic field required to trigger the functional response in MCMs may be tailored by application of strain.
• MCE quantification: adiabatic temperature(ΔTad), magnetic entropy change(ΔSmag), Refrigeration Capacity(RC). Four stages of a magnetic cooling cycle
Major problem in the state-of-the-art magnetic cooling: The required magnetic field magnitude to activate a useful MCE is impractically large (~2~5 T)
Magnetic Cooling is a great candidate for the next generation of Cooling technology • Improved energy efficiency(~50%) • Using solid, non-volatile refrigerant, environmentally friendly.
Strain Engineering of MCE Response
• Functional effect always occurs in the vicinity of a magnetostructural phase transition.
MCE Model System: FeRh Overview and Preliminary Results FeRh Overview4
Fe(1-x)Rhx (0.48<x
Exploring Sustainable Pathways for Realization of Magnetic Cooling Technology: Strain Engineering of Magnetocaloric Effect in FeRh Xiaoyu Zhang, Radhika Barua and Laura H. Lewis Department of Mechanical and Industrial Engineering, Northeastern University, Boston, MA, 02115, USA
Emerging Technology: Magnetic Cooling2
Research Motivation: Next Generation of Cooling Vapor compression system has served for cooling application for about 100 years. However, this conventional refrigeration has high energy consumption and detrimental effects on environments.1
Magnetic cooling is an emerging technology based on Magnetocaloric Effect (MCE). • MCE: reversible temperature change of magnetic materials upon application and removal of a magnetic field.
2013 U.S. Primary Energy Consumption in Residential and Commercial Sectors
Others 72%
Cooling applications 28%
Major classes of Drawbacks Air refrigerants conditioning CFCs and HCFCs Contributions to the depletion 16% ozone layer HFCs High global warming potential Ventilation (GWP) 5% Other Have varying degrees of Refrigeration alternatives flammability, toxicity and GWP 7%
Overall: 35.08 Quads/year
• Hypothesis: The magnetic field required to trigger the functional response in MCMs may be tailored by application of strain.
• MCE quantification: adiabatic temperature(ΔTad), magnetic entropy change(ΔSmag), Refrigeration Capacity(RC). Four stages of a magnetic cooling cycle
Major problem in the state-of-the-art magnetic cooling: The required magnetic field magnitude to activate a useful MCE is impractically large (~2~5 T)
Magnetic Cooling is a great candidate for the next generation of Cooling technology • Improved energy efficiency(~50%) • Using solid, non-volatile refrigerant, environmentally friendly.
Strain Engineering of MCE Response
• Functional effect always occurs in the vicinity of a magnetostructural phase transition.
MCE Model System: FeRh Overview and Preliminary Results FeRh Overview4
Fe(1-x)Rhx (0.48<x
