Bethanie J. Hills Stadler
Professor

  

Area of expertise: Nano Magnetic and Photonic Materials and Devices

Education
Ph.D., MSE, 1994, Massachusetts Institute of Technology, Cambridge, MA, United States
B.S., MSE, 1990, Case Western Reserve University, Cleveland, OH, United States

Contact information
Office: 6-159 Keller Hall
Telephone: (612) 626-1628
E-mail: stadler (at) umn.edu
Research Group Web Site: http://www.ece.umn.edu/~stadler/

Honors/Awards
Elected Secretary of MRS, 2008-2010
University of Minnesota McKnight Presidential Fellow, 2006-2009
Elected to MRS Board of Directors, 2004
NSF CAREER Award, 2002

Synopsis
My research focuses primarily on the integration of magnetic and optical materials with standard platforms to allow the development of practical devices and systems.  In photonics, this includes the integration of magnets, magneto-optical garnets waveguides, and nanostructures for magnetophotonic crystals with semiconductor platforms for isolator and sensor applications.  In magnetics, Stadler is working on magnetic nanowires for magnetoelectronics (including hard drive heads) and acoustic sensor applications.    See  www.ece.umn.edu/users/stadler for more info.

Selected publications

Publications


2.      K. Sai Madhukar Reddy, Mazin M Maqableh, and Bethanie J.H. Stadler, “Epitaxial Fe12xGax/GaAs Structures via Electrochemistry for Spintronic Applications,” Accepted to Journal of Applied Physics (2012).

3.      K. Sai Madhukar Reddy, Jung Jin Park, Mazin M Maqableh, Alison B. Flatau, and Bethanie J.H. Stadler, “Magnetization Reversal Mechanisms in 35-nm Diameter Fe1-xGax/Cu Multilayered Nanowires,” Accepted to Journal of Applied Physics (2012).

4.      Mazin Maqablah, Liwen Tan, Xiaobo Huang, Ryan Cobian, Greg Norby, R. H. Victora, Bethanie J. H. Stadler, “CPP GMR through Nanowires,” Accepted to IEEE Transactions on Magnetics (Jan 2012).

5.      Sai Madhukar Reddy, Jung Jin Park, Suok-Min Na, Mazin M. Maqableh, Alison B. Flatau and Bethanie J. H. Stadler, “Electrochemical Synthesis of Magnetostrictive Fe-Ga/Cu Multilayered Nanowire Arrays with Tailored Magnetic Response,” Advanced Functional Materials 21 4677  (2011).

6.      “Micromagnetic calculation of spin transfer torque in Co/Cu multilayer nanowires”, Stephanie Hernández, Liwen Tan, Bethanie J. H. Stadler, and R. H. Victora, Journal of Applied Physics 109 07C916 (2011).

7.      Sang-Yeob Sung, Anirudh Sharma, Andrew Block, Katherine Keuhn, Bethanie J. H. Stadler, “Magneto-Optical Garnet Waveguides on Semiconductor Platforms: Magnetics, Mechanics, and Photonics,” , Journal of Applied Physics 109 07B738 (2011).

8.      P. McGary, M. Reddy, G. Haugstad and B. Stadler, “Combinatorial Aqueous Electrochemical Deposition of Magnetostrictive Fe1-xGax AlloyFilms,” J. Electrochem. Society 157 12 D656-D665 (2010).

9.      Jung Jin Park, Madhukar Reddy, Chaitanya Mudivarthi, Patrick R. Downey, Bethanie J.H. Stadler, Alison B. Flatau, ”Characterization of the magnetic properties of multilayer magnetostrictive Iron-Gallium nanowires,” Journal of Applied Physics 107 09A954 (2010).

10.  Xiaobo Huang, Liwen Tan, Haeseok Cho, and Bethanie J. H. Stadler, “Magnetoresistance and Spin Transfer Torque in Electrodeposited Co/Cu Multilayered Nanowire Arrays with Small Diameters,” Journal of Applied Physics 103 07B504 (2009).

11.  Ratnanjali Khandwal, Xiaoyuan Qi, Sang-Yeob Sung and Bethanie J.H. Stadler, “Opening of hybrid band gaps in two-dimensional photonic crystals of Pb(Mg1/3Nb1/3)O3-PbTiO3   having very low refractive index contrast,” IEEE Photonic Technology Letters 20 [9] p. 673-5 (2008).

12.  Liwen Tan, Patrick D. McGary, Bethanie J. H. Stadler, " Controlling the Angular Response of Magnetoresistance in Co/Cu Multilayered Nanowires using Co Crystallographic Orientation," Journal of Applied Physics 103 07B504 (2008).

13.  Patrick R. Downey, Alison B. Flatau, Patrick D. McGary, Bethanie J. H. Stadler, “Effect of magnetic field on the mechanical properties of magnetostrictive iron-gallium nanowires,” Journal of Applied Physics 103    (2008).

14.  L. Tan and B.J.H. Stadler, “Fabrication and Magnetic Behavior of Co/Cu Multilayered Nanowires,” J. Materials Research  21 no.11  2870-2875  (2006).

15.  J. Zou, X. Qi, L. Tan, B.J.H.Stadler, “Nanoporous Silicon with Long-Range-Order using Imprinted Anodic Alumina Etch Masks,” Applied Physics Letters 89, 093106 (2006).

16.  R.R. Basantkumar, B.J.H. Stadler, R. William, E. Summers, “Sputtered Galfenol Thin Films,“ IEEE Transactions on Magnetics 42 3102 (2006).

17.  P.D. McGary, L.Tan, J.Zou, B.J.H. Stadler, P. Downey, A.Flatau, “Magnetic Nanowires for Acoustic Sensors (Invited)” Journal of Applied Physics 99, 08B310 (2006).  Also selected for publication in the Virtual Journal of Nanoscale Science & Technology 13 [18] (2006).

18.  Neal Speetzen, Xiaobo Huang, Bethanie J.H. Stadler, R.H. Victora, “The Effects of Oxygen on Intergranular Exchange and Anisotropy Dispersion in Co/Pd Multilayers for Perpendicular Magnetic Recording Media” Journal of Applied Physics 99, 08E708 (2006).

19.  Sang-Yeob Sung, Xiaoyuan Qi, and Bethanie J. H. Stadler, “Integrating Yttrium Iron Garnet onto Non-Garnet Substrates with Faster Deposition Rates and High Reliability,” Applied Physics Letters 87, 121111 (2005).

20.  P. D. McGary and B.J.H. Stadler, “Electrochemical deposition of Fe1-xGax nanowire arrays,” Journal of Applied Physics 97, 10R503 (2005).  Also selected for publication in the Virtual Journal of Nanoscale Science & Technology 11 [21] (2005).

21.  N.J. Speetzen and B. J. H. Stadler, “Reducing grain and domain size in high-coercivity Co/Pd perpendicular magnetic recording media through seedlayer engineering,” Journal of Applied Physics 97, 10N118 (2005).

22.  N. Speetzen, B.J.H. Stadler, E. Yuan, R.H. Victora, X. Qi, J.H. Judy, N. Supper, and T. Pohkil, “Co/Pd Multilayers for Perpendicular Magnetic Recording Media (Invited),” Journal of Magnetism and Magnetic Materials 287, 181-7 (2005).

23.  Samir K.Mondal and Bethanie J. H. Stadler, “Novel designs for integrating YIG/air Photonic Crystal slab polarizers with waveguide Faraday rotators”, IEEE Photonics Technology Letters 17 [1] 127-129 (2005).

24.  X. Qi, B.J.H. Stadler, R.H. Victora, J.H. Judy, O. Hellwig, N. Supper, “Si-doping of Co/Pd multilayers for improved signal to noise in perpendicular magnetic recording media,” IEEE Transactions on Magnetics 40 [4.2] 2476-9 (2004).
Xiaobo Huang, Liwen Tan, Haeseok Cho, and Bethanie J. H. Stadler, "Magnetoresistance and Spin Transfer Torque in Electrodeposited Co/Cu Multilayered Nanowire Arrays with Small Diameters", Submitted to Journal of Applied Physics 2008.

Ratnanjali Khandwal, Xiaoyuan Qi, Sang-Yeob Sung and Bethanie J.H. Stadler, "Opening of hybrid band gaps in two-dimensional photonic crystals of Pb(Mg1/3Nb1/3)O3-PbTiO3   having very low refractive index contrast", IEEE Photonic Technology Letters 20 [9] p. 673-5 (2008).

Liwen Tan, Patrick D. McGary, Bethanie J. H. Stadler, "Controlling the Angular Response of Magnetoresistance in Co/Cu Multilayered Nanowires using Co Crystallographic Orientation",  Journal of Applied Physics 103 07B504 (2008).

Patrick R. Downey, Alison B. Flatau, Patrick D. McGary, Bethanie J. H. Stadler, "Effect of magnetic field on the mechanical properties of magnetostrictive iron-gallium nanowires", Journal of Applied Physics 103 (2008).

L. Tan and B.J.H. Stadler, "Fabrication and Magnetic Behavior of Co/Cu Multilayered Nanowires", J. Materials Research  21 no.11  2870-2875  (2006).

J. Zou, X. Qi, L. Tan, B.J.H.Stadler, "Nanoporous Silicon with Long-Range-Order using Imprinted Anodic Alumina Etch Masks", Applied Physics Letters 89, 093106 (2006).

R.R. Basantkumar, B.J.H. Stadler, R. William, E. Summers, “Sputtered Galfenol Thin Films",  IEEE Transactions on Magnetics 42 3102 (2006).

P.D. McGary, L.Tan, J.Zou, B.J.H. Stadler, P. Downey, A.Flatau, "Magnetic Nanowires for Acoustic Sensors (Invited)", Journal of Applied Physics 99, 08B310 (2006).  Also selected for publication in the Virtual Journal of Nanoscale Science & Technology 13 [18] (2006).

Neal Speetzen, Xiaobo Huang, Bethanie J.H. Stadler, R.H. Victora, "The Effects of Oxygen on Intergranular Exchange and Anisotropy Dispersion in Co/Pd Multilayers for Perpendicular Magnetic Recording Media", Journal of Applied Physics 99, 08E708 (2006).

Sang-Yeob Sung, Xiaoyuan Qi, and Bethanie J. H. Stadler, "Integrating Yttrium Iron Garnet onto Non-Garnet Substrates with Faster Deposition Rates and High Reliability", Applied Physics Letters 87, 121111 (2005).

P. D. McGary and B.J.H. Stadler, "Electrochemical deposition of Fe1-xGax nanowire arrays", Journal of Applied Physics 97, 10R503 (2005).  Also selected for publication in the Virtual Journal of Nanoscale Science & Technology 11 [21] (2005). 

N.J. Speetzen and B. J. H. Stadler, "Reducing grain and domain size in high-coercivity Co/Pd perpendicular magnetic recording media through seedlayer engineering", Journal of Applied Physics 97, 10N118 (2005).

N. Speetzen, B.J.H. Stadler, E. Yuan, R.H. Victora, X. Qi, J.H. Judy, N. Supper, and T. Pohkil, "Co/Pd Multilayers for Perpendicular Magnetic Recording Media (Invited)",  Journal of Magnetism and Magnetic Materials 287, 181-7 (2005).

Samir K.Mondal and Bethanie J. H. Stadler, "Novel designs for integrating YIG/air Photonic Crystal slab polarizers with waveguide Faraday rotators", IEEE Photonics Technology Letters 17 [1] 127-129 (2005).

X. Qi, B.J.H. Stadler, R.H. Victora, J.H. Judy, O. Hellwig, N. Supper, "Si-doping of Co/Pd multilayers for improved signal to noise in perpendicular magnetic recording media",  IEEE Transactions on Magnetics 40 [4.2] 2476-9 (2004).