David A. Crandles
	Professor, PhD (McMaster), MSc (Ottawa), BSc (Western) Office: MC B202 Phone: (905) 688-5550 Ext. 3539 E-mail: dcrandles@brocku.ca

Research Interests

Teaching Assignments (2024-2025)

Spring

• PHYS 1P91/1P21 - Mechanics and Waves (w or w/o Lab)

Fall - Winter

• PHYS 3P35 - Electromagnetism I (fall term)
• PHYS 1P90 - Foundations of Physics with Laboratory (winter term)
• PHYS 2P51 - Classical and Modern Optics (winter term)

Recent Publications

• C.M. Wilson, R. Ganesh, D.A. Crandles, Localisation of vibrational modes in high-entropy oxides J. Phys. Cond. Matt. 36, 295701 (2024)
• T. Afsharvosoughi, D.A. Crandles, An infrared study of antiferromagnetic medium and high entropy rocksalt structure oxides J. Appl. Phys 130, 184103 (2021)
• L.H. Obied, S. Roorda, S. Prucnal,Shengqiang Zhou, D.A. Crandles, An Infrared Transmission Study of Ge:Mn Thick Films prepared by Ion Implantation and Post-Annealing J. Appl. Phys 127, 103902 (2020)
• V. Bovtun, J. Petzelt, M. Kempa, D. Nuzhnyy, M. Savinov, S. Kamba, S. M.M. Yee, D.A. Crandles, Wide range dielectric and infrared spectroscopy of (Nb+In) co-doped rutile ceramics Phys. Rev. Mat. 2, 075002 (2018).
• J. Petzelt, D. Nuzhnyy, V. Bovtun, D.A. Crandles, Origin of the colossal permittivity of (Nb+In) co-doped rutile ceramics by wide-range dielectric spectrscopy Phase Transitions, 91:9-10, 932 (2018).
• D. A. Crandles, S. M. M. Yee, M. Savinov, D. Nuzhnyy, J. Petzelt, S. Kamba and J. Prokes Electrode effects in dielectric spectroscopy measurements on (Nb+In)co-doped TiO₂ . J. of Applied Physics B, 119, 154105, (2016).
• J. Manson, A. Madubuonu, D.A. Crandles, C. Uher, Petr Lostak, Infrared Spectroscopy of Cr- and V-doped Sb₂Te₃: Dilute magnetic semiconductors. Phys. Rev. B, 90, 205205, (2014).
• L. Obied, D.A. Crandles, S. Roorda, Ge:Mn Dilute magnetic semiconductors. Physics in Canada B, 70, 166, (2014).
• P. Kovacs, B. Des Roches, D.A. Crandles, A Study of Ferromagnetic Signals in SrTiO₃ Nanoparticles AIP Conf. Proc. 1590 (2014) 87.
• W. De La Cruz, S. Moodie, J. Manson, D.A. Crandles, D. Grebennikov, P. Mascher, Reflectance Spectroscopy of Ba_3+xZn_1+yNb₂O₉ Perovskites Progress In Electromagnetics Research Symposium Proceedings, Stockholm, Sweden, Aug. 12-15 (2013) 225.
• L. H. Obied, D. A. Crandles, V.N. Antonov, S. K. Bose, O. Jepsen, Infrared spectroscopy and the ferromagnetic transition in Gd J. Phys. Cond. Mat. 25 (2013) 036002
• M. Hajialmdari, F.S. Razavi, D.A. Crandles, R. K. Kremer, and M. Reedyk, Far-IR excitations in Cd₂Re₂O₇ in the normal and superconducting states J. Phys. Cond. Mat. 24 (2012) 505701
• S.M.M. Yee, D.A. Crandles, L.V.Goncharova, Ferromagnetism on the unpolished surfaces of single crystal metal oxide substrates J of Applied Physics 110, (2011) 033906
• S. Jamali Gharetape, M.P. Singh, F.S. Razavi, D.A. Crandles, L.Y. Zhao,and K.T. Leung Effect of vanadium deficiency on properties of polycrystalline LaVO₃ Applied Physics Letters 98, (2011) 052509
• D.A. Crandles, B. DesRoches and F.S. Razavi, A search for defect related ferromagnetism in SrTiO₃ J. of Applied Physics 108, (2010) 053908