Jerel Zarestky

off site address:
Oak Ridge National Laboratory
Oak Ridge TN 37831-6393


Phone: (865) 574-4951
Fax: (865) 574-5041
Email: zarestkyjl@ornl.gov

Personal History

B.S. 1973, Ph.D. 1979, Ames Laboratory at Oak Ridge National Laboratory 1979-present.

Research Interests

Research interests center on the field of condensed matter physics; specifically the study of martensitic behavior, magnetism and superconductivity in a wide variety of materials. This interest is based on the use of the techniques of neutron scattering. Elastic measurements are employed to study the lattice and magnetic structure, and inelastic neutron scattering measurements are used to provide detailed information on lattice and spin dynamics.

Recent areas of study involve novel materials, which have properties of an eventual applied nature but are presently widely investigated for fundamental reasons. These materials include systems that exhibit ionic conduction, the magneto caloric effect, magnetostriction, shape memory, Invar behavior and negative thermal expansion. Almost without exception these materials have very interesting structural and/or magnetic behavior as a function of temperature or magnetic field or both. Neutrons are an extremely useful tool in probing such materials. Neutron measured dispersion curves give insight to the dynamics of the system, the electron-phonon interaction and hence superconductivity. With elastic neutron measurements, details of structural and magnetic behavior can be pinpointed in more detail than by bulk measurements.

Selected Publications

"Temperature and magnetic field dependences of the elastic constants of Ni-Mn-Al ", Xavier Moya, Llu”s Ma–osa, Antoni Planes, Thorsten Krenke, Mehmet Acet, Michel Morin, J. L. Zarestky, andT. A. Lograsso, Phys. Rev. B, (accepted) (2006).


"Spin-Waves in Antiferromagnetic Single-crystal LiFePO ₄ ", J. Li, V. O. Garlea, J. L. Zarestky, and D. Vaknin, Phys. Rev. B 73, 024410 (2006).


"Localized excitation in the hybridization gap in YbAl ₃ ", A. D. Christianson, V. Fanelli, J. M. Lawrence, E. A. Goremychkin, R. Osborn, E. D. Bauer, J. L Sarrao, J. D Thompson, C. D. Frost, and J. L Zarestky, Phys. Rev. Lett., 96, 117206 (2006).


"Probing spin frustration in high-symmetry magnetic nanomolecules by inelastic neutron scattering ", V. O. Garlea, S. E. Nagler, J. L. Zarestky, C. Stassis, D. Vaknin, P. Kšgerler, D. F. McMorrow, C. Niedermayer, D. A. Tennant, B. Lake, Y. Qiu, M. Exler, J. Schnack, and M. Luban, Phys. Rev. B., 73, 024414 (2006).


"Lattice dynamics and phonon softening in Ni-Mn-Al Heusler alloys ", Xavier Moya, Llu”s Ma–osa, Antoni Planes, Thorsten Krenke, Mehmet Acet, V. O. Garlea, T. A. Lograsso, D. L. Schlagel and J. L. Zarestky, Phys. Rev. B, 73, 064303 (2006).


"Compositional variation of the phonon dispersion curves of bcc Fe-Ga alloys ", J. L. Zarestky, V.O. Garlea, T.A Lograsso, D. L. Schlagel and C. Stassis, Phys.Rev.B, 72, 180408(R) (2005).


"Neutron Diffraction Studies of the Tb5SixGe _4-x Magnetoelastic Compounds with x = 2.2 and x = 2.5 ", V.O. Garlea, J. L. Zarestky, C.Y. Jones, L.-L. Lin, D.L.Schlagel, T.A. Lograsso, A.O. Tsokol, V.K. Pecharsky, K.A.Gschneidner Jr., C. Stassis, Phys. Rev. B, 72, 10431 (2005).


"Antiferromagnetism in Pr₃In ", A.D. Christianson and J.M. Lawrence, J. L. Zarestky, H.S. Suzuki, J.D. Thompson, M.F. Hundley, J. L. Sarrao, C.H. Booth, D. Antonio, A. L. Cornelius, Phys. Rev. B 72, 24402 (2005).


"Magnetic structure of the local-moment antiferromagnet CeCuSn ", S. Chang, Y. Janssen, V.O. Garlea, J. L. Zarestky, H. Nakotte, R. J. McQueeney, J. Appl. Phys. 97, 10A913 (2005).


"Elastic constants of Ni-Mn-Ga magnetic shape memory alloys ", M. Stipcich, Ll. Ma–osa, A. Planes, M. Morin, J. L. Zarestky, T. Lograsso, C. Stassis, Phys. Rev.B 70, 054115 (2004).


"Commensurate-Incommensurate Magnetic Phase Transition in Magnetoelectric Single Crystal LiNiPO4 ", D. Vaknin, J. L. Zarestky, J.-P. Rivera, H.Schmid, Phys. Rev. Let. 92, 207201-1, (2004).