Karl Sandeman
Department Chairperson and Associate Professor
Physics
Location: 2156g Ingersoll Hall
Phone: 718.951.5000 x2870
Fax: 718.951.4407
Email:
Karl Sandeman is interested in how we may tailor phase transitions in so-called functional materials for either the efficient use of energy, such as in refrigeration, or its efficient conversion, such as in power generation. His studies require an understanding of the relationship between structure and function at all length-scales and a holistic research approach that combines experimental and theoretical tools. He coordinated the "DRREAM" and "SSEEC" grants on magnetic cooling, funded by the European Commission under Framework Programme 7 and was a faculty member at Imperial College London from 2009-2015. He was also a Royal Society University Research Fellow from 2005 to 2013, initially at the University of Cambridge and latterly at Imperial College. Karl served as a director of studies in physics at Churchill College, Cambridge between 2004 and 2009.
Education:
Ph.D., University of Cambridge (United Kingdom) - 2002 (Theoretical Condensed Matter Physics)
B.A. and M.Sci. in Natural Sciences, University of Cambridge (United Kingdom) - 1998 (Experimental and Theoretical Physics)
Areas of Expertise:
Phase transitions; magnetic materials; thermodynamics; materials modelling; neutron scattering; experimental condensed matter physics.
Books and Publications
Tantillo, A.N., A. Barcza, V. Zellmann, M.Almanza, V. Basso, M. LoBue, N. M. Dempsey, K.G. Sandeman. "Hard ferromagnets as a new perspective on materials for thermomagnetic power generation cycles." Physics Letters A 461: 128632.
(Books and Publications: Article (Peer-reviewed)) 2023
Basso, V., C.P. Sasso, M. LoBue and K.G. Sandeman. "Magnetocaloric effect at the reorientation of the magnetization in ferromagnetic multilayers with perpendicular anisotropy." arXiv preprint arXiv:2211.11146. (Books and Publications: Article (Other)) 2022
Sandeman, K.G. and S. Takei. "Magnetocaloric Materials and Applications." In: Coey, J.M.D. and S. Parkin (eds) "Handbook of Magnetism and Magnetic Materials." Springer, Cham. (Books and Publications: Book Chapter) 2021
Dung, N.H., N.B. Doan, P. De Rango, L. Ranno, K. G. Sandeman and N.M. Dempsey. "Fabrication of magnetocaloric La(Fe,Si)13 thick films." Journal of Applied Physics 127: 215103. (Books and Publications: Article (Peer-reviewed)) 2020
Ugochukwu, K.C., M.M. Sadiq, E. S. Biegel, L. Meagher, M.R. Hill, K. G. Sandeman, A. Haydon, J. Lickliter and K. Suzuki. "Effect of direct-current magnetic field on the specific absorption rate of metamagnetic CoMnSi: A potential approach to switchable hyperthermia therapy." AIP Advances 10: 015128.
(Books and Publications: Article (Peer-reviewed)) 2020
Vallone, S.P., A.N. Tantillo, A.M. dos Santos, J.J. Molaison, R. Kulmaczewski, A. Chapoy, P. Ahmadi, M.A. Halcrow and K.G. Sandeman. "Giant Barocaloric Effect at the Spin Crossover Transition of a Molecular Crystal." Advanced Materials 31: 1807334. (Books and Publications: Article (Peer-reviewed)) 2019
Gercsi, Z., N. Fuller, K.G. Sandeman and A. Fujita. "Electronic structure, metamagnetism and thermopower of LaSiFe12 and interstitially doped LaSiFe12." Journal of Physics D: Applied Physics 51: 034003. (Books and Publications: Article (Peer-reviewed)) 2018
Zemen J., Z. Gercsi and K.G. Sandeman. "Piezomagnetism as a counterpart of the magnetovolume effect in magnetically frustrated Mn-based antiperovskite nitrides." Physical Review B 96: 024451. (Books and Publications: Article (Peer-reviewed)) 2017
Zemen J., E. Mendive Tapia, Z. Gercsi, R. Banerjee, C.E. Patrick, J.B. Staunton and K.G. Sandeman. "Frustrated Magnetism and Caloric Effects in Mn-antiperovskite Nitrides: Ab Initio Theory." Physical Review B 95: 184438. (Books and Publications: Article (Peer-reviewed)) 2017
Bovo, G, I. Bräunlich, W.R. Caseri, N. Stingelin, T.D. Anthopoulos, K.G. Sandeman, D.D.C. Bradley and P.N. Stavrinou. "Room temperature dielectric bistability in solution-processed spin crossover polymer thin films." Journal of Materials Chemistry C 4: 6240. (Books and Publications: Article (Peer-reviewed)) 2016
K.G. Sandeman. "The mechanocaloric potential of spin crossover compounds." APL Materials 4: 111102. (Books and Publications: Article (Peer-reviewed)) 2016
Takeuchi, I. and K.G. Sandeman. "Solid-state cooling with caloric materials." Physics Today 68: 48-54. (Books and Publications: Article (Other)) 2015
Barati, M.R., C. Selomulya, K.G. Sandeman and K. Suzuki. "Extraordinary Induction Heating Effect Near the First Order Curie Transition." Applied Physics Letters 105: 162412. (Books and Publications: Article (Peer-reviewed)) 2014
Baumfeld, O.L., Z. Gercsi, M Krautz, O. Gutfleisch and K.G. Sandeman. "The Dynamics of Spontaneous Hydrogen Segregation in LaFe13−xSixHy." Journal of Applied Physics 115: 203905. (Books and Publications: Article (Peer-reviewed)) 2014
K.G. Sandeman. "Magnetic measurement standardization." Magnetics Technology International 4: 72. (Books and Publications: Article (Other)) 2014
Turcaud, J.A., A.M. Pereira, K.G. Sandeman, J.S. Amaral, K. Morrison, A. Berenov, A. Daoud-Aladine and L.F. Cohen. "Spontaneous magnetization above TC in polycrystalline La0.7Ca0.3MnO3 and La0.7Ba0.3MnO3." Physical Review B 90: 024410. (Books and Publications: Article (Peer-reviewed)) 2014
Barcza, A., Z. Gercsi, H. Michor, K. Suzuki, W. Kockelmann, K.S. Knight and K.G. Sandeman. "Magneto-elastic coupling and competing entropy changes in substituted CoMnSi metamagnets." Physical Review B 87: 064410. (Books and Publications: Article (Peer-reviewed)) 2013
Gercsi, Z., E.K. Delczeg-Czirjak, L. Vitos, A.S. Wills, A. Daoud-Aladine and K.G. Sandeman. "Magnetoelastic effects in doped Fe2P." Physical Review B 88: 024417. (Books and Publications: Article (Peer-reviewed)) 2013
Staunton, J.B., M. dos Santos Dias, J. Peace, Z. Gercsi and K.G. Sandeman. "Tuning the metamagnetism of an antiferromagnetic metal." Physical Review B 87: 060404. (Books and Publications: Article (Peer-reviewed)) 2013
Turcaud, J., K. Morrison, A. Berenov, N. McN. Alford, K.G. Sandeman and L.F. Cohen. "Microstructural control and tuning of thermal conductivity in La0.67Ca0.33MnO3±∂." Scripta Materialia 68: 510. (Books and Publications: Article (Peer-reviewed)) 2013
"Magnetocaloric materials: the search for new systems." Scripta Materalia 67: 566. (Books and Publications: Article (Peer-reviewed)) 2012
Bratko, M., K. Morrison, A .de Campos, S. Gama, L.F. Cohen and K.G. Sandeman. "History dependence of directly observed magnetocaloric effects in (Mn,Fe)As." Applied Physics Letters 100: 252409. (Books and Publications: Article (Peer-reviewed)) 2012
Morrison, K., J. Lyubina, J.D. Moore, K.G. Sandeman, O. Gutfleisch, L.F. Cohen and A.D. Caplin. "Magnetic refrigeration: phase transitions, itinerant magnetism and spin fluctuations." Philosophical Magazine 92: 292. (Books and Publications: Article (Peer-reviewed)) 2012
Morrison, K., K.G. Sandeman, L.F. Cohen, C.P. Sasso, V. Basso, A. Barcza, M. Katter, J.D. Moore, K.P. Skokov and O. Gutfleisch. "Evaluation of the reliability of the measurement of key magnetocaloric properties: A round robin study of La(Fe,Si,Mn)Hδ conducted by the SSEEC consortium of European laboratories." International Journal of Refrigeration 35: 1528. (Books and Publications: Article (Peer-reviewed)) 2012
"Gas-free Refrigeration." Magnetics Technology International 1: 32. (Books and Publications: Article (Other)) 2011
Buchard, A., M.R. Kember, K.G. Sandeman and C.K. Williams. "A bimetallic iron (III) catalyst for CO2/exoxide coupling." Chemical Communications 47: 212. (Books and Publications: Article (Peer-reviewed)) 2011
Gercsi, Z., K. Hono and K.G. Sandeman. "Designed metamagnetism in CoMnGe1-xPx." Physical Review B 83: 174403. (Books and Publications: Article (Peer-reviewed)) 2011
Barcza, A., Z. Gercsi, K.S. Knight and K.G. Sandeman. "Giant Magnetoelastic Coupling in a Metallic Helical Metamagnet." Physical Review Letters 104: 247202. (Books and Publications: Article (Peer-reviewed)) 2010
Gercsi, Z. and K.G. Sandeman. "Structurally driven metamagnetism in MnP and related Pnma compounds." Physical Review B 81: 224426. (Books and Publications: Article (Peer-reviewed)) 2010
Morrison, K., A. Barcza, J.D. Moore, K.G. Sandeman, M. K. Chattopadhyay, S.B. Roy, A.D. Caplin and L.F. Cohen. "The magnetocaloric performance in pure and mixed magnetic phase CoMnSi." Journal of Physics D 43: 195001. (Books and Publications: Article (Peer-reviewed)) 2010
Morrison, K., J. Lyubina, J.D. Moore, A.D. Caplin, K.G. Sandeman, O. Gutfleisch, and L.F. Cohen. "Contributions to the entropy change in melt-spun LaFe11.6Si1.4." Journal of Physics D 43 : 132001. (Books and Publications: Article (Peer-reviewed)) 2010
Hamer, J.B.A., R. Daou, S. Özcan, N.D. Mathur, D.J. Fray and K.G. Sandeman. "Phase diagram and magnetocaloric effect of CoMnGe1-xSnx alloys" Journal of Magnetism and Magnetic Materials 321: 3535. (Books and Publications: Article (Peer-reviewed)) 2009
Moore, J.D., K. Morrison, K.G. Sandeman, M. Katter and L.F. Cohen. "Reducing extrinsic hysteresis in first-order La(Fe,Co,Si)13 magnetocaloric systems." Applied Physics Letters 95: 252504. (Books and Publications: Article (Peer-reviewed)) 2009
Morrison, K., J.D. Moore, K.G. Sandeman, A.D. Caplin and L.F. Cohen. "Capturing first- and second-order behavior in magnetocaloric CoMnSi0.92Ge0.08." Physical Review B 79: 134408. (Books and Publications: Article (Peer-reviewed)) 2009
Morrison, K., Y. Miyoshi, J.D. Moore, A. Barcza, K.G. Sandeman, A.D. Caplin and L.F. Cohen. "Measurement of the magnetocaloric properties of CoMn0.95Fe0.05Si: Large change with Fe substitution." Physical Review B 78: 134418. (Books and Publications: Article (Peer-reviewed)) 2008
Sandeman, K.G., R. Daou, S. Özcan, J.H. Durrell, N.D. Mathur and D.J. Fray. "Negative magnetocaloric effect from highly sensitive metamagnetism in CoMnSi1-xGex." Physical Review B 74: 224436. (Books and Publications: Article (Peer-reviewed)) 2006
Ransley, J.H.T., S.H. Mennema, K.G. Sandeman, G. Burnell, E. J. Tarte, J.E. Evetts, M. G. Blamire, J. I. Kye and B. Oh. "The normal-state resistivity of grain boundaries in YBa2Cu3O7−δ." Applied Physics Letters 84: 4089. (Books and Publications: Article (Peer-reviewed)) 2004
Sandeman, K.G., G.G. Lonzarich and A.J. Schofield. "Ferromagnetic superconductivity driven by changing Fermi surface topology." Physical Review Letters 90: 167005. (Books and Publications: Article (Peer-reviewed)) 2003
Sandeman, K.G. and A.J. Schofield. "Model of anisotropic scattering in a quasi-two-dimensional metal." Physical Review B 63: 094510. (Books and Publications: Article (Peer-reviewed)) 2001
Awards, Honors and Fellowships
PSC-CUNY TRADA Grant, for "Materials Informatics for Magnetocaloric Materials Screening and Discovery." $3,500; 2021-2022. (Grants and Fellowships) 2021
Mercator Fellow on DFG Collaborative Research Centre/Transregio grant "HoMMage", 1/2020 - 12/2023. (Grants and Fellowships) 2020
PSC-CUNY TRADB Grant, for "Barocaloric Effects and Criticality in Spin Crossover Compounds." $6,000; 2020-2021. (Grants and Fellowships) 2020
NSF Major Research Instrumentation Grant 1920177, for "MRI: Acquisition of a Cryogen-free Cooling System to Enable Multi-Modal Materials Research and Research Training." $154,350; 2019-2021. (Grants and Fellowships) 2019
PSC-CUNY TRADB Grant, for "Quantifying Local Disorder in Caloric Materials." $5,700; 2019-2020. (Grants and Fellowships) 2019
PSC-CUNY TRADA Grant, for "Hard Ferromagnets as Thermomagnetic Power Generation Materials." $3,500; 2018-2019. (Grants and Fellowships) 2018
PSC-CUNY TRADA Grant, for "Barocaloric response of spin crossover compounds." $3,500; 2017-2018. (Grants and Fellowships) 2017
PSC-CUNY TRADB Grant, for "Pair distribution function analysis of metamagnetic antiferromagnets." $5,700; 2016-2017. (Grants and Fellowships) 2016
Society for Science and the Public Advocate for Underrepresented Students in Science and Engineering, 2016-2017 (Awards and Honors) 2016
Unversité Grenoble Alpes (UGA) Invited Professor Position, for "The influence of magnetic anisotropy on pyromagnetic effects." $7,000; 2016. (Grants and Fellowships) 2016
European Commission FP7 Grant 310748 for "Drastically Reduced Rare Earth use in Applications of Magnetocalorics." (DRREAM), 3.7MEuro; 2013-2015. (Grants and Fellowships) 2013
Research Activities
Oak Ridge National Laboratory (ORNL) beam time allocation, for "The pressure dependence of spin crossover for barocaloric applications II." 2-day experiment conducted in 2017. 2017
Oak Ridge National Laboratory (ORNL) beam time allocation, for "The pressure dependence of spin crossover for barocaloric applications." 4-day experiment conducted at ORNL in 2016. 2016
Conferences, Seminars and Symposiums
"The Fréchet Distance as a Tool to Predict the Order of a Curie Transition from Electronic Densities of States." Trinity College Dublin. Online, June 28. (Conferences, Seminars and Symposiums: Invited Talk) 2022
"Caloric Materials: Challenges and Opportunities in Use, Characterization and Modeling." HoMMage IRTG. Online, Apr. 26. (Conferences, Seminars and Symposiums: Invited Talk) 2022
"The Search for Magnetocaloric Materials - Towards a Data-Driven Approach." Virginia Commonwealth University. Online, Oct. 8. (Conferences, Seminars and Symposiums: Invited Talk) 2021
"Giant Barocaloric Effect at the Spin Crossover Transition of a Molecular Crystal." 2020 Virtual MRS Spring/Fall Meeting and Exhibit. Online, Dec. 1. (Conferences, Seminars and Symposiums: Invited Talk) 2020
"Caloric Materials: a Playground for Fundamental Research and Novel Applications." CRC/TRR 270 HoMMage project retreat (virtual), Sept. 28. (Conferences, Seminars and Symposiums: Invited Talk) 2020
"Giant Barocaloric Effect in a First Order Spin Crossover Molecular Crystal Probed by Neutron Diffraction and Calorimetry under Pressure." Workshop on Neutrons and Complementary Techniques for Quantum Materials, hosted by Oak Ridge National Laboratory (virtual), Aug. 20. (Conferences, Seminars and Symposiums: Invited Talk) 2020
"Caloric Materials: a Playground for Fundamental Research and Novel Applications." 6th Ruhr Symposium on Functional Magnetic Materials. Duisburg, Germany, Oct. 9. (Conferences, Seminars and Symposiums: Invited Talk) 2019
"Quasi-adiabatic Magnetocaloric Effect Measurements with a PPMS." Workshop on Undergraduate Physics in the 21st Century. Columbia University, New York, NY, May 15. (Conferences, Seminars and Symposiums: Invited Talk) 2019
"Optimization of Magnetically Hard Pyromagnets." 2018 TMS Annual Meeting & Exhibition. Phoenix, AZ, Mar. 13. (Conferences, Seminars and Symposiums: Invited Talk) 2018
"An Examination of the Virgin Effect in Mn-Fe-P-Si Alloys via Total Scattering." Thermag 2018. Darmstadt, Germany, Sept. 19. (Conferences, Seminars and Symposiums: Conference Presentation) 2018
"Giant Barocaloric Effect in a First Order Spin Crossover Compound." Thermag 2018. Darmstadt, Germany, Sept. 19. (Conferences, Seminars and Symposiums: Invited Talk) 2018
"Molecular Spin Crossover Crystals as Barocalorics." CIMTEC 2018; 8th Forum on New Materials. Perugia, Italy, Jun. 14. (Conferences, Seminars and Symposiums: Invited Talk) 2018
"Magnetocaloric Materials and Magnetic Cooling." DPG Bad Honnef Physics School on Magnetism: From Fundamentals to Spin based Nanotechnology. Bad Honnef, Sept. 22. (Conferences, Seminars and Symposiums: Invited Talk) 2017
"Advances in the modelling, functionality, and deployment of (tri)critical materials." Winton Meeting on Caloric Materials, Cambridge, UK. (Conferences, Seminars and Symposiums: Invited Talk) 2016
"DRREAM: Reducing Rare Earth Use in Applications of Magnetocalorics." EMA 2016. Orlando, Jan. 20. (Conferences, Seminars and Symposiums: Invited Talk) 2016
"DRREAM: Reducing Rare Earth Use in Applications of Magnetocalorics." MMM-Intermag 2016. San Diego, Jan. 14. (Conferences, Seminars and Symposiums: Conference Presentation) 2016
"Electronic structure and metamagnetic transition in doped La(Si,Fe)13." MMM-Intermag 2016. San Diego, Jan. 14. (Conferences, Seminars and Symposiums: Conference Presentation) 2016
"DRREAM: Reducing Rare Earth Use in Applications of Magnetocalorics." 2015 Delft Days on Magnetocalorics (DDMC 2015). Delft, The Netherlands. (Conferences, Seminars and Symposiums: Invited Talk) 2015
"DRREAM: Reducing Rare Earth Use in Applications of Magnetocalorics." TMS Annual Meeting & Exhibition. Orlando, Fla. (Conferences, Seminars and Symposiums: Invited Talk) 2015
"DRREAM: Reducing Rare Earth Use in Applications of Magnetocalorics." Workshop on Advancing Caloric Materials for Efficient Cooling. University of Maryland - College Park. (Conferences, Seminars and Symposiums: Invited Talk) 2015
"Magnetocaloric materials: the search for new systems." Annual Meeting of the French Society for Metallurgy and Materials (S2FM JA2015). Paris, France. (Conferences, Seminars and Symposiums: Invited Talk) 2015
"Caloric effects near (tri)critical points." 8th Energy, Materials, and Nanotechnology Meeting. Orlando, Fla., November. (Conferences, Seminars and Symposiums: Invited Talk) 2014
"DRREAM: Reducing Rare Earth Use in Magnetocaloric Applications." Thermag VI Conference on Magnetic Refrigeration. Victoria, British Columbia. (Conferences, Seminars and Symposiums: Conference Presentation) 2014
"The role of magneto-elastic coupling in tomorrow's magnetic refrigerants." E-MRS/MRS Bilateral Energy Conference at the E-MRS 2014 Spring Meeting. Lille, France. (Conferences, Seminars and Symposiums: Invited Talk) 2014
"The search for new magnetocaloric materials." CIMTEC Forum on New Materials. Montecatini Terme, Italy. (Conferences, Seminars and Symposiums: Invited Talk) 2014
"Towards enhanced magnetocaloric effects: a combined experimental/theoretical methodology." American Physical Society March Meeting. Denver. (Conferences, Seminars and Symposiums: Conference Presentation) 2014
Poster presentation. 59th Annual Magnetism and Magnetic Materials Conference. Honolulu, November. (Conferences, Seminars and Symposiums: Conference Presentation) 2014
"Solid state cooling: functional phase transitions revisited." Joint Magnetism and Magnetic Materials / Intermag Meeting. Chicago, January. (Conferences, Seminars and Symposiums: Conference Presentation) 2013
Argonne National Laboratory, Lemont, Ill.; Energy & Materials Criticality Workshop, Greece; TU Darmstadt, Germany. (Conferences, Seminars and Symposiums: Invited Talk) 2013
"An Ashby Map as a Guide in the Search for New Magnetocaloric Systems." Intermag. Vancouver, British Columbia. (Conferences, Seminars and Symposiums: Conference Presentation) 2012
"Tricriticality and giant magnetoelasticity in CoMnSi." American Physical Society March Meeting. Boston. (Conferences, Seminars and Symposiums: Conference Presentation) 2012
TU-Dresden, Germany; University of Warwick, United Kingdom; ICYRAM, Singapore; University of British Columbia, Vancouver; University of Victoria, British Columbia; Simon Fraser University, British Columbia; University of Maryland, College Park; City College of New York (CUNY), New York; Columbia University, New York; Queen Mary University of London, United Kingdom; Massachusetts Institute of Technology, Cambridge, Mass. (Conferences, Seminars and Symposiums: Invited Talk) 2012
"SSEEC: An integrated collaborative approach to magnetic cooling and magnetocaloric materials." Magnetism and Magnetic Materials Conference. Scottsdale, Ariz. (Conferences, Seminars and Symposiums: Conference Presentation) 2011
London Centre for Nanotechnology, United Kingdom; TU Delft, the Netherlands. (Conferences, Seminars and Symposiums: Invited Talk) 2011
University of Birmingham, United Kingdom; University of Bristol, United Kingdom; JEMS 2010, Krakow, Poland; Risø-DTU, Denmark. (Conferences, Seminars and Symposiums: Invited Talk) 2010
University of Sydney, Australia; Bragg Institute, Lucas Heights, Australia; Max Planck Institute, Halle, Germany. (Conferences, Seminars and Symposiums: Invited Talk) 2009
Other Professional Activities
Member, advisory editorial board, Journal of Magnetism and Magnetic Materials, 2013-16. 2013
Chair, THERMAG conference advisory board, 2012 - present. 2012
Member, Scientific Advisory Committee, and lecturer, European School on Magnetism, 2011 - present. 2011
