Dr. Gregory Kenning

Greg Kenning

Professor

Office: 45 Weyandt Hall
Phone: 724-357-2192
Email:  gregory.kenning@iup.edu

Education

PhD, Michigan State University, Phsics, 1988
MSc, Queens University, Physics, 1983
BSc, University of Manitoba, Physics, 1981

Field

Applied Physics
Engineering

Courses

PHYS 111/112, Introductory Physics

Research Interests

The primary focus of Dr. Kenning's research is magnetism including fundamental magnetic measurements, nanoscale and magnetic material science, and biophysics applications of magnetism.

Current Research

Dr. Kenning is currently working on several projects, which fall into the above-mentioned categories:

  • Fundamental Magnetic Measurements
    1.1) Noise measurements and the Fluctuation Dissipation Theory
    1.2) Frustrated and Disordered Magnetic Materials
  • Nanoscale Physics and Applications
    2.1) Magnetic Nanoparticles
    2.2) Multilayer nanoparticles and thin films
  • Applied Bio Physics and Medical Devices3.1) Cancer Detection using Monoclonal Antibody Targeted Magnetic Nanoparticles and SQUID Scanner Magnetometery3.2) Mapping the Magnetism of the Human Body

Publications

Kenning G.G. , D.L.Schlagel, V.Thompson-Experimental determination of the critical spin-glass correlation length in single-crystal CuMn, Physical Review B102, 064427 - Published 26 August 2020

Qiang Zhai, V. Martin-Mayor , Deborah L. Schlagel, Gregory G. Kenning, and Raymond L. Orbach, Slowing down of spin glass correlation length growth: Simulations meet experiments, Physical Review B 100, 094202 (2019)

Gregory G. Kenning, Daniel M. Tennant, Christina M. Rost, Fagner Garrote da Silva, Brian J. Walters, Qiang Zhai, David C. Harrison, E. Dan Dalhberg, and Raymond L. Orbach, End of aging as a probe of finite-size effects near the spin-glass transition temperature, Phys. Rev. B 98, 104436 - Published 28 September 2018

Qiang Zhai, David C. Harrison, Daniel Tennant, E. Dan Dalhberg, Gregory G. Kenning, and Raymond L. Orbach, Glassy dynamics in CuMn thin-film multilayers, Phys. Rev. B 95, 054304 - Published 6 February 2017

M.R. Madden, T. Alshammary, B. Grove, J. Phillips, K. Reaz, S. Hensley and G.G. Kenning, The Effect of Varying Co layer thickness on the Time-Temperature Characteristics of Co/Sb Semimetal Embedded Magnetic Nanoparticles, Journal of Applied Physics, Volume 117, Issue 10, 2015

Samaresh Guchhait, Gregory G. Kenning, Raymond L. Orbach, and Gilberto F. Rodriguez, Spin Glass Dynamic at the Mesoscale, Phys. Rev. B 91, 014434 - Published 28 January 2015

Kenning, G.G., Development of a Nanoparticle Time-Temperature Sensor for Passive and Active RFID, RFID (IEEE RFID), 2014 IEEE International Conference on, p134 - 140, 8-10 April 2014

G. F. Rodriguez, G. G. Kenning, R. Orbach, Effect of the Thermal Quench on Aging in Spin Glasses, Phys. Rev. B 88, 054302 (2013)

Gregory. G. Kenning, Christopher Heidt, Aaron Barnes, James Martin, Benjamin Grove, and Michael Madden, Thermally activated magnetization and resistance decay during near ambient temperature aging of Co nanoflakes in a confining semi-metallic environment, J. Appl. Phys. 110, 114312 (2011)

G.G. Kenning, J. Bowen, P. Sibani and G.F. Rodriguez, Temperature Dependence of Effective Fluctuation Time Scales in Spin Glasses, Physical Review B 81, 1 (2010)

Paolo Sibani and Gregory G. Kenning, Origin of Sub-Aging and End of Aging Behavior in Glassy Dynamics, Physical Review E 81, 011108 (2010)

Sibani, P. Rodriguez, G.F. and G.G. Kenning, Intermittent Quakes and Record Dynamics in the Thermoremanent Magnetization of a Spin-glass, Physical Review B 74, 224407 (2006)

Kenning, G.G., Rodriguez, G.F. and R. Orbach, The End of Aging in a Complex System, Physical Review Letters, 97, 057201 (2006)

Kenning, G.G., Rodriguez, R. Moslemi, A. Wilson, S., Hawel, L., Byus, C. and Kovach, J., Use of SQUID Magnetometry to Non-Invasively Detect and Locate Magnetically Labeled Cancers: A Feasibility Study, Review of Scientific Instruments Vol. 76, No. 1 (2005)

Rodriguez, G., Kenning, G.G. and Orbach, R., Full Aging in Spin Glasses, Physical Review Letters, Vol. 91, No. 3, 037203-1, July 18, 2003.

Zotev, V.S., Rodriguez, G. F., Kenning, G.G. Orbach R., Vincent E. and Hammann, J. The Role of Initial Conditions in Spin-Glass Aging Experiments, Physical Review B, 6718(18):4422, 2003 May 1.

Zotev, V.S.; Kenning, G.G.; Orbach, R. From linear to nonlinear response in spin glasses: Importance of mean-field-theory predictions. Physical Review B (Condensed Matter and Materials Physics), vol.66, (no.1), APS through AIP, p.014412/1-10, 1 July 2002.

Kenning, G.G.; Joh, Y.G.; Chu, D.; Orbach, R. Thermoremanent magnetization as a probe of the field-quenched states in spin glasses. Physical Review B (Condensed Matter), vol.52, (no.5), p.3479-831, Aug. 1995.

Chu, D., Kenning, G.G. and Orbach R., Effect of Magnetic Field on the Relaxation of the Thermoremenant Magnetization in Spin-Glasses, Philosophical Magazine B 71, 479 (1995)

Chu, D.; Kenning, G.G.; Orbach, R. Dynamic measurements in a Heisenberg spin glass: CuMn. Physical Review Letters, vol.72, (no.20p.3270-3) ), 16 May 1994.

Kenning, G.G.; Chu, D.; Orbach, R. Irreversibility crossover in a Cu:Mn spin glass in high magnetic fields: evidence for the Gabay-Toulouse transition. Physical Review Letters, vol.66, (no.22), p.2923-6, 3 June 1991.

Mattsson, J.; Granberg, P.; Lundgren, L.; Nordblad, P.; Kenning, G.; Cowen, J.A., Nonlinear susceptibility of 2D spin glass films. Journal of Magnetism and Magnetic Materials, vol.104-107, pt.3, (ICM), 1991.

Kenning, G.G., Chu, D., Alavi B, Hammann, J.M. and R. Orbach, Magnetic Field Dependence of Tg. in Bulk Cu: Mn and Cu:Mn/Cu Multilayer Systems, Journal of Applied Physics 69(8), 5240 (1991).

Kenning, G.G.; Bass, J.; Pratt, W.P., Jr.; Leslie-Pelecky, D.; Hoines, L.; Leach, W.; Wilson, M.L.; Stubi, R.; Cowen, J.A. Finite-size effects in Cu-Mn spin glasses. Physical Review B (Condensed Matter), vol.42, (no.4), p.2393-415, 1 Aug. 1990.

Granberg, P.; Nordblad, P.; Svedlindh, P.; Lundgren, L.; Stubi, R.; Kenning, G.G.; Leslie-Pelecky, D.L.; Bass, J.; Cowen, J. Dimensionality crossover in CuMn spin-glass films. Journal of Applied Physics, vol. 67, (no.9, pt.2B), (Thirty-Fourth Annual Conference on Magnetism and Magnetic Materials, Boston, MA, USA, 28 Nov.-1 Dec. 1989, p.5252-4, .) 1 May 1990.

Sandlund, L.; Granberg, P.; Lundgren, L.; Nordblad, P.; Svedlindh, P.; Cowen, J.A.; Kenning, G.G. Dynamics of Cu-Mn spin-glass films. Physical Review B (Condensed Matter), vol. 40, (no.1), p.869-72, 1 July 1989.

Cowen, J.A., Kenning, G.G. and J. Bass, Finite Size Effects in a Metallic Spin Glass, Journal of Applied Physics 64,5781 (1988).

Kenning, G.G.; Slaughter, J.M.; Cowen, J.A. Finite-size effects in a CuMn spin-glass. Physical Review Letters, vol.59, (no.22), p.2596-9, 30 Nov. 1987.

Magnetic Susceptibility and Magnetic Resonance of a Compositionally Modulated Spin Glass Film, J.A. Cowen, G.G. Kenning and J.M. Slaughter, Journal of Applied Physics 61,8 (1987).

Gaunt, P. Kenning, G.G. and Ram, U.S., Magnetic Viscosity in MnAlC, Journal of Applied Physics, 53 (1981).