Presentations (selected)

Presentations


Invited Talks

MS&T Conference 2015, Columbus, October 4-8, 2015

  • M. A. Willard, M. Daniil, S. Lan, and K. E. Knipling, – Soft Magnetic Materials for Energy Applications in Extreme Environments

TMS Annual Meeting 2015, Orlando, March 16-19, 2015

  • S. Lan, J. J. Lewandowski, and M. A. Willard – Structure Evolution and Hot Hardness of Co-Fe-Zr-B-Cu Magnetic Material

59th Magnetism and Magnetic Materials Conference, Honolulu, November 3-7, 2014

  • M. A. Willard, “Challenges of Magnetic Materials for Vehicle Electrification”

ASMI, Cleveland Chapter Meeting, Cleveland, January 27, 2014

  • M. A. Willard  – “Stronger, Lighter, and More Energy Efficient:  Challenges of Magnetic Material Development for Vehicle Electrification”

TMS Annual Meeting 2013, San Antonio, March 3-7, 2013

  • M. A. Willard, M. Daniil, and K. E. Knipling – Soft magnetic alloys for high frequency applications (power electronics)

  • M. A. Willard, Stronger, Lighter, and More Energy Efficient:  Challenges of Magnetic Material Development for Vehicle Electrification

NAE – US-Frontiers of Engineering Symposium, Warren, MI, September 13-15, 2012

  • M. A. Willard  – “Stronger, Lighter, and More Energy Efficient:  Challenges of Magnetic Material Development for Vehicle Electrification”

TMS Annual Meeting 2012, Orlando, March 11-15, 2012

  • M. Willard, L. Minter, M. Brandes, K. Knipling, J. Olmos-Silverman, and M. Daniil – “Roles of Texture Formation and Grain Refinement on Nanocomposite Magnetic Alloys”

  • M. A. Willard, M. Daniil, and K. E. Knipling – “Nanocomposite Soft Magnetic Materials: Role of Composition on Properties”

2012 APS March Meeting, Boston, MA, February 27-March 2, 2012

  • M. A. Willard – “Soft Magnetic Materials for Improved Energy Efficiency”

TMS Annual Meeting 2011, San Diego, February 27-March 3, 2011

  • M. A. Willard, M. Daniil, K. E. Knipling, and R. Goswami – Nanocrystalline soft magnetic alloys: Sustained energy by improved energy efficiency

  • M. A. Willard, M. Daniil, K. E. Knipling, and R. Goswami – Nanocomposite magnetic materials: Improved performance by nanostructuring   

Contributed Talks

TMS Annual Meeting 2016, Nashville, TN, Feb. 14-18, 2016

  • (*) M. A. Willard, M. Daniil, S. Lan, and K. E. Knipling – Nanocomposite soft magnetic alloys: Two Decades of Progress

12th Joint MMM/Intermag Conference, Chicago, IL, Jan. 14-18, 2013

  • B. C. Hornbuckle, B. Wang, T. T. Sasaki, M. Daniil, M. A. Willard and G. B. Thompson, “Magnetic Properties of (Co1-xNix)88Zr7B4Cu1 Soft Nanocrystalline Alloys”

  • M. Daniil and M. A. Willard, “Magnetic Properties of (Fe-Si-Al)-based Nanocrystalline Alloys with Varying Degrees of Structural”

56th Magnetism and Magnetic Materials Conference, Scottsdale, Oct. 30-Nov. 3, 2011

  • Maria Daniil, Matt Brandes, and Matthew A. Willard, “Synthesis and Characterization of Nd4+xFe72Co5Ga2B17-x Nanocomposite Ribbons”

Posters

Materials Research Society – Fall 2004, Boston, November 29-December 3, 2004

  • M. A. Willard, T. L. Francavilla, R. Goswami, and V. G. Harris “Nanocrystalline Soft Magnetic Materials for Space Applications”

8th Joint MMM/Intermag Conference, San Antonio, January 7-11, 2001

  • Marc DeGraef, Matthew A. Willard, David E. Laughlin, and Michael E. McHenry “Lorentz microscopy observations of a nanocrystalline Fe44Co44Zr7B4Cu1 alloy”

MURI Annual Review – Wright-Patterson AFB, October 12-16, 1999

            Summary of HITPERM research to date

43rd Magnetism and Magnetic Materials Conference, Miami, November 9-12, 1998

  • K. A. Gallagher, M. A. Willard, V. N. Zabenkin, D. E. Laughlin, and M. E. McHenry “Distributed Magnetic Exchange Interactions and Mean Field Theory Description of Temperature Dependent Magnetization in Amorphous Fe88Zr7B4Cu1 Alloys”

Co-authored Invited Talks

TMS Annual Meeting 2006, San Antonio, March 12-16, 2006

  • S. Joshi, S. D. Yoon, A. Yang, N. X. Sun, C. Vittoria, R. Goswami, M. A. Willard, and V. G. Harris “Structural Evolution and Process Refinement of Nanocrystalline Exchange-Coupled Magnetic Films”

  • T. M. Heil, M. A. Willard, W. T. Reynolds, H. Chopra “Influence of Composition and Microstructure on the Magnetic Properties of Ni-Fe-Ga Ferromagnetic Shape Memory Alloys”

International Conference on Solid-to-Solid Phase Transformations in Inorganic Materials, Phoenix, May 29-June 3, 2005

  • T. M. Heil, W. T. Reynolds, M. A. Willard, M. R. Sullivan, M. D. Huntington, and H. D. Chopra. “Effects of Annealing on the Martensite Transformation in a Ni-Fe-Ga Ferromagnetic Shape Memory Alloy”

International Conference on Advanced Materials, Yokohama, Japan, Oct. 8-10, 2003

  • V. G. Harris, E. E. Carpenter, S. Calvin, S. Morrison, L. Kurihara, M. A. Willard, and C. L. Cahill “Chemically Prepared Magnetic Nanoparticles”

High Temperature Electronics Conference, Albuquerque, NM, June 12-15, 2000

  • M. E. McHenry, A. Hsaio, M. A. Willard, V. G. Harris “Materials for use in Passive Components for High Temperature Power Electronic Applications”

Intermag Conference 2000, Toronto, Canada, April 9-13, 2000

  • M. E. McHenry, M. A. Willard, and D. E. Laughlin “HITPERM Nanocrystalline Soft Magnets”

10th Annual Conference on Computational Research on Materials, West Virginia University, May 17-19, 2000

  • M. E. McHenry, M. A. Willard, and D. E. Laughlin “HITPERM Nanocrystalline Soft Magnets”

TMS Annual Meeting, Nashville, TN, Mar. 12-15, 2000

  • D. E. Laughlin, M. A. Willard, and M. E. McHenry.  “Magnetic Ordering: Some Structural Aspects”

Spring Materials Research Society, San Francisco, April 5-9, 1999

  • M. E. Hawley, G. W. Brown, D. J. Thoma, M. A. Willard, D. E. Laughlin, and M. E. McHenry.  “Magnetic Force Microscopy Study of New Nanocrystalline Soft Magnetic Ribbons”

International Union of Materials Research Societies - International Conference in Asia, Bangalore, India, Oct. 13-16, 1998

  • M. E. McHenry, M. A. Willard, H. Iwanabe, R. A. Sutton, and Z. Turgut “Synthesis, Structure, and Soft Magnetic Properties of Nanocrystalline Alloys Produced by Crystallization of Amorphous Precursors”

Co-authored Contributed Talks

12th Joint MMM/Intermag Conference, Chicago, IL, Jan. 14-18, 2013

  • K.E. Knipling, J. Olmos-Silverman, M. Daniil and M.A.Willard, “The effect of substituting Nb and Hf for Zr in Fe-Co-Ni-Zr-B-Cu nanocrystalline soft magnetic alloys”

TMS Annual Meeting 2012, Orlando, March 11-15, 2012

  • K. E. Knipling, M. Daniil, M. A. Willard, “The effect of substituting Nb and Hf for Zr in Fe-Co-Ni-Zr-B-Cu nanocrystalline soft magnetic alloys”

56th Magnetism and Magnetic Materials Conference, Scottsdale, Oct. 30-Nov. 3, 2011

  • S. Paticopoulos, R. Caballero-Flores, V. Franco, J. S. Blázquez, A. Conde, K. E. Knipling and M. A. Willard, “Enhancement of the magnetocaloric effect in composites: Experimental validation”

  • M. Daniil, L. Minter, and M. A. Willard, “High temperature performance of Pr10(Fe,Co,Ni)84B6 nanocomposite alloys”

  • T. Sepehrifar, F. Jiménez-Villacorta, J. L. Marion, M. Daniil, M. A. Willard, and L. H. Lewis, “Novel Exchange Anisotropy in Nanostructured MnAl Alloys”

TMS Annual Meeting 2011, San Diego, February 27-March 3, 2011

  • R. Caballero-Flores, V. Franco, A. Conde, K. E. Knipling, M. A. Willard; “Optimization of the Refrigerant Capacity in Multiphase Magnetocaloric Materials”

55th Magnetism and Magnetic Materials Conference, Atlanta, November 14-18, 2010

  • R. Caballero-Flores, V. Franco, A. Conde, K. E. Knipling, M. A. Willard; “Magnetocaloric effect and critical exponents of Fe77Co5.5Ni5.5Zr7B4Cu1: a detailed study”

52nd International Field Emission Symposium, Sydney, Australia, July 5-8, 2010

  • K. L. Torres, M. Daniil, M. A. Willard, and G. B. Thompson, “Optimal Voxel Sizing in Chemically Partitioned Melt Spun Ribbons”

  • B. C. Hornbuckle, M. Daniil, T. T. Sasaki, M. A. Willard, and G. B. Thompson, “Chemical-Partitioning in (Co1-xNix)88Zr7B4Cu1 Soft Magnetic Nanocrystalline Alloys”

TMS Annual Meeting 2010, Seattle, Feb. 14-18, 2010

  • K. E. Knipling, M. Daniil, and M. A. Willard, “Partitioning Behavior of Al and Si in FINEMET Nanocrystalline Soft Magnetic Alloys, as Studied by Atom-Probe Tomography”

  • M. Daniil, P. R. Ohodnicki, M. E. McHenry, and M. A. Willard, “Co-rich nanocrystalline soft magnetic ribbons with improved mechanical strength”

11th Joint MMM/Intermag Conference, Washington, DC, Jan. 18-22, 2010

  • K. E. Knipling, M. Daniil, and M. A. Willard “Fe-Based Nanocrystalline Soft Magnetic Alloys for High-Temperature Applications”

  • M. Daniil, M. Osofsky, R. Goswami, and M. A. Willard, “Structure and Magnetic Properties of Soft Nanocrystalline Fe-Si-Al-Nb-B-Cu Ribbons for Low Temperature Applications”

16th APS Shock Compression of Condensed Matter, Nashville, June 28 - July 3, 2009

  • C. Wehrenberg, N.N. Thadhani, M. Willard, M. Daniil, and S.G. Sankar, “Shock consolidation and high-strain-rate deformation/die upsetting of magnetic powders”

Cryogenic Engineering Conference and International Cryogenic Materials Conference 2009, Tuscon, AZ, June 28 - July 2, 2009

  • D. U. Gubser, M. Daniil, M. Rawlings, and M. A. Willard “Magnetic Inductors for Cryogenic Power Electronics”

Microscopy and Microanalysis 2009, Richmond, July 26-30, 2009

  • K. E. Knipling, M. A. Willard, M. Daniil, D. N. Seidman, and P. H. Clifton, “Partitioning Behavior of Al and Si in FINEMET Nanocrystalline Soft Magnetic Alloys, as Studied by Atom-Probe Tomography”

International Cryogenic Engineering Conference 22 and International Cryogenic Materials Conference 2008, Seoul, Korea, July 21-25, 2008

  • D. U. Gubser, M. Daniil, and M. A. Willard “Magnetic Inductors for Cryogenic Power Electronics”

TMS Annual Meeting 2008, New Orleans, Mar. 9-13, 2008

  • M. Daniil, T. M. Heil and M. A. Willard, “Co-rich Nanocrystalline Soft Magnetic Ribbons with Improved Mechanical Strength”

Materials Research Society Fall Meeting, Boston, Nov. 25-30, 2007

  • A. Baraskar, S. D. Yoon, C. N. Chinnasamy, Y. Chen, N. Sun, C. Vittoria, T. Heil, M. Willard, and V. G. Harris. “Structural and Magnetic Properties of melt-spun Fe-Co-Ni ribbons and powders for inductor applications”

52nd Magnetism and Magnetic Materials Conference, Tampa, Nov. 5-9, 2007

  • M. Daniil and M. A. Willard, “Structure and magnetic properties of CoFeZrMBCu soft nanocrystalline alloys”

  • P. R. Ohodnicki, Jr., S. Y. Park, D. E. Laughlin, M. E. McHenry, V. Keylin, and M. A. Willard. “Crystallization and Thermomagnetic Treatment of a Co-rich Co-Fe-Zr-B-Cu Based Nanocomposite Alloy with Ni Additions”

  • A. Baraskar, S. D. Yoon, C. N. Chinnasamy, Y. Chen, N. Sun, C. Vittoria, T. Heil, M. Willard, and V. G. Harris. “Structural and Magnetic Properties of ball-milled Ni11Co11Fe66Zr7B4Cu1 Powders”

10th Joint MMM/Intermag Conference, Baltimore, Jan. 7-11, 2007

  • T. M. Heil, J. J. Flores, and M. A. Willard, “Structure and magnetic properties of nanocrystalline soft magnetic alloys with improved mechanical properties”

  • S. Joshi, S. D. Yoon, A. Yang, C. Vittoria, M. A. Willard, R. Goswami, and V. G. Harris “Structure and Magnetism of Pulse Laser Deposited (Ni59Co22Fe7)88Zr7B4Cux (x=0,1) Thin Films”

50th Magnetism and Magnetic Materials Conference, San Jose, Oct. 30-Nov. 3, 2005

  • S. Joshi, S. D. Yoon, A. Yang, C. Vittoria, M. Willard, R. Goswami, and V. G. Harris “Structure and Magnetism of Pulse Laser Deposited (Ni59Co22Fe7)88Zr7B4Cux (x=0,1) Thin Films”

Cryogenic Engineering Conference and International Cryogenic Materials Conference, Keystone, CO, Aug. 29-Sep. 2, 2005

  • J. H. Claassen and M. A. Willard “Magnetic Materials for Cryogenic Power Electronics Applications”

17th International Workshop on Rare Earth Magnets and their Applications, Newark, DE, Aug. 18-22, 2002

  • Christina H. Chen, Steve Kodat, Michael H. Walmer, Shu-Fan Cheng, Matthew A. Willard, and Vincent G. Harris.  “Magnetic and Structural Properties of Sm(Co1-xFex)z Based Powders and Spin Cast Ribbons”

47th Magnetism and Magnetic Materials Conference, Tampa, Nov. 11-14, 2002

  • C. H. Chen, S. Kodat, M. H. Walmer, S.-F. Cheng, M. A. Willard, and V. G. Harris  “The Effects of Grain Size and Morphology on the Coercivity of Sm2(Co1-xFex)17 Based Powders and Spin Cast Ribbons”

8th Joint MMM/Intermag Conference, San Antonio, January 7-11, 2001

  • M. De Graef, M. A.Willard, M. E. McHenry, and Y. Zhu.  “In-situ Lorentz TEM Cooling Study of Magnetic Domain Configurations in Ni2MnGa”

  • Michelle R. Tamoria, Everett E. Carpenter, Michael M. Miller, John H. Claassen, Badri N. Das, Lynn K. Kurihara, Richard K. Everett, Matthew A. Willard, Amy C. Hsiao, Michael E. McHenry, and Vincent G. Harris  “Magnetism, Structure and the Effects of Thermal Aging on (Fe1-xMnx)73.5Si13.5B9Nb3Cu1 Alloys”

Materials Research Society Spring Meeting, San Francisco, April 5-9, 1999

  • A. Hsiao, Z. Turgut, M. A. Willard, E. Selinger, D. E. Laughlin, M. E. McHenry, and R. Hasegawa.  “Crystallization and Nanocrystallization Kinetics of Fe-Based Amorphous Alloys”

American Physical Society March Meeting, St. Louis, MO, Mar. 18-22, 1996

  • R. W. McCallum, M. A. Willard, K. W. Dennis, and M. J. Kramer “Glass Formation and Primary Solidification in Nd2Fe14B with TiC Additions”

39th Magnetism and Magnetic Materials Conference, Philadelphia, Nov. 6-9, 1995

  • R. W. McCallum, M. A. Willard, K. W. Dennis, D. J. Branagan, and M. J. Kramer “A Metallurgical Approach Toward Alloying in Rare Earth Permanent Magnet Systems”

13th International Workshop on Rare Earth Magnets and their Applications, Birmingham, England, 1994

  • M. A. Willard, B. M. Ma, D. W. Scott, Y. L. Liang, W. L. Liu, and C. O. Bounds.  “Influence of Thermal Treatment on the Microstructure of Sm(Co,Fe,Cu,Zr)z Alloys and Magnets (where 7.5<z<8.6)”

 

Seminars and Workshops

  • Materials Science and Engineering Graduate Student Seminar, April 14, 1998

  • Data Storage Systems Center Seminar, April 24, 1998

  • Ames Laboratory Seminar - McCallum Group, December 16, 1998

  • SUNY – Stony Brook Interview, March 31, 2000

  • Northwestern University Interview, April 10, 2000

  • NRL – Materials Physics Branch Postdoc Seminar, September 26, 2001

  • Laboratory for Physical Sciences, Univ. Maryland – College Park, February 12, 2003  “Nanostructured Magnetic Materials”

  • L3 Communications – New Orleans, LA, March 7, 2006

  • DARPA Inductor Workshop – Baltimore, MD, January 12, 2007

  • Nebraska Center for Materials/Nanoscience Seminar – Lincoln, NE, October 3, 2008

  • University of Alabama – Tuscaloosa, Bernard Ames MTE Seminar, October 16, 2008

  • Workshop “Future of High Performance Permanent Magnets in the USA”, January 30, 2009

  • University of Connecticut – Chemical, Materials, and Biomolecular Engineering Seminar, March 25, 2009

  • Case Western Reserve University Seminar – DMSE Colloquium, October 6, 2009

  • Carpenter Technology Corp. – Reading, PA, July 25, 2011

  • Case Western Reserve University – Case School of Engineering Seminar, November 21, 2011

  • Case Western Reserve University – MSE Seminar, February 10, 2012

  • Northeastern University – Nanomaterials Seminar, March 1, 2012

  • Iowa State University/Ames Laboratory – Seminar, April 19, 2012

  • Case Western Reserve University – MSE Seminar, January 22, 2013

  • Soft Magnetic Materials Workshop on Materials Synthesis and Simulation Across Scales “Future Military Magnetics:  Compact Power in Extreme Environments”, Pacific Northwest National Lab, May 22, 2013

  • Materials Design Institute Summer Research Group, Los Alamos, July 16-18, 2013 M. A. Willard, M. Daniil, and K. E. Knipling – Nanocomposite Magnetic Alloys for Power Applications