FY2005 MURI 

Synthesis and Processing of Nanocomposite Permanent Magnets

Approaches from the Bottom                                                                              

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              Thanksgiving news: Nanotechweb reported our research results on preparation of Sm-Co nanoparticles by surfactant-

assisted ball milling (in pdf) (in html).   Sm-Co hard magnetic nanoparticles with room-temperature   coercivity have been successfully produced using a surfactant-assisted ball milling technique by Yiping and co- workers in our UTA-Experiment Group. The results are published in Nanotechnology (in pdf).

 

           Our second annual review meeting was held at University of Maryland, College Park, on September 11-12, 2007. The program managers, Dr. Mihal Gross, Dr. John Prater, and Dr. Harold Weinstock attended the meeting. All the PIs and postdocs and students from the seven groups presented their research results in oral presentations and posters to show our major progress made in the past year. Nine experts of our Advisory Committee from Naval Research Laboratory, Ames National Laboratory, Sandia National Laboratory, EEC Inc. and University of Texas-Arlington are invited to attend the meeting. Our University of Maryland group did excellent job in hosting this review meeting.

             On August 29, 2007, NanotechWeb reported our research progress in

           warm compaction of bulk nanocomposite permanent magnets. This

          project has been carried out by our UTA experimental group in

          collaboration with the MURI team and the NanoTech Institute at the

          University of Texas at Dallas. It has been a great challenge to directly

           compact nanoparticles with particle size down to few nanometers. The

          warm compaction is a new method developed in the UTA group for

          fabrication of bulk nanocomposite magnets as one of the key techniques in

          our bottom-up approach to production of nanostructured bulk

          materials (in pdf) (in html).

 

                      Our first annual review meeting was held at Brown University on September 19-20, 2006. The program managers, Dr. Mihal Gross and Dr. John Prater, and all the PIs and postdocs and students attended the meeting. Each group presented their major research results in oral presentations and posters which showed that great progress has been made in the past year. Our Brown University group did excellent job in hosting this review meeting.

 

         The Rare-earth Magnets Workshop was held successfully in Sheraton hotel, Boston on November 27, 2005, from 8:00AM to 6:00PM. Six speakers including four invited speakers gave tutorials which cover many fundamental and manufacturing aspects of the rare-earth transition-metal permanent magnets. The speakers and topics were:

Dr. Shu-Fan Cheng, Naval Research Laboratory,
The
development and DoD applications of rare-earth transition-metal permanent magnets

Dr. Christina Chen, University of Dayton,
SmCo high-
temperature magnets and Reduction-Diffusion technique for production of SmCo and NdFeB powders

Dr. Hao Zeng, University at Buffalo
Magnetism in nanoparticles

Dr. Samuel Jiang, Argonne National Laboratory
Magnetization reversal and coercivity in exchange-spring magnets               Our team members and the speakers.

Dr. Z.Q. Jin, Arnold Magnetic Technologies
Rapidly quenched NdFeB and SmCo magnets and processing of bulk nanostructured magnets.

Dr. J. P. Liu, University of Texas -Arlington
Magnetic interactions in rare-earth transition-metal magnets

           Fruitful discussions and exchanges accompanied the presentations throughout the meeting. After the tutorials, Dr. Ping Liu gave a brief quarterly review of our MURI project. All the newly joined team members then gave 10-15 minute presentation each to introduce themselves and talk about their research results and plans.

           This was the first gathering after our Kick-off Meeting and was a “big union” of the team. All the principal investigators and the postdocs and students involved to the MURI project were in the meeting. We had a “union picture” (see above). Dr. John Prater from Army Research Office, one of our project review committee members attended the whole meeting. Everyone felt that this workshop is very helpful to our teamwork. (More photos from the workshop...)

 

  • Physics Web Reports on Synthesis of  L10 Structured FePt NanoparticlesThe team (08/04/2005)                                                                                                                                                                     .          On August 4, 2005, Physics Web reported our recent research achievement in the synthesis of ferromagnetic FePt nanoparticles. "Physicists in the US have developed a simple way to make nano-sized particles with potentially useful magnetic properties", the report said. Prof. Kevin O'Grady of York University evaluated the progress as "quite a remarkable result". With this creative technique, monodisperse FePt nanoparticles can be produced just by adding table salt to the raw particles before heat treatments.  The produced ferromagnetic nanoparticles can be used as building blocks for magnetic recording media and high performance permanent magnets. The particles can also be used directly in biomedical applications. This work was led by Prof. J. Ping Liu and Kevin Elkins, Daren Li, Narayan Poudyal, Vikas Nandwana, Zhiqiang Jin and Kanghua Chen have contributed to the project.  (in pdf) (in html)

 

  • One Paper Selected by IOP Select (08/04/2005)
    One of the paper in Dr. Liu's group, titled "Monodisperse face-centered tetragonal FePt nanoparticles with giant coercivity", has been selected by Institute of Physics Publishing for inclusion in IOP Select. IoP Select is a special collection of journal articles, chosen by IOP Editors based on one or more of the following criteria: substantial advances or significant breakthroughs; a high degree of novelty; significant impact on future research. "The service reflects both the breadth and international significance of papers published in our prestigious research journals and provides even greater visibility for our authors" said Dr. Nina Blakesley, Publishhing Administrator of Journal of Physics D: Applied Physics.
  • MURI Kick-off Meeting at UTA (04/26-27/2005)
  •    
    FY2005 MURI project Kick-Off meeting was held at University of Texas at Arlington on April 26-27, 2005.            
      The meeting starts with a welcome talk by Prof. Paul Paulus, Dean of UTA College of Science. Attendants of this meeting  include Dr. Mihal Gross, manager of Physical Science S&T Division, Office of Naval Research (ONR), Dr. Valerie Browning, program manager at the Defense Advanced Research Projects Agency (DARPA) Defense Science Office (DSO), and Dr. John  Prater associate director of Material Science Division at Army Research Office (ARO). Dr. Liu, the Principal Investigator, gave a presentation on "Synthesis and processing of nanocomposite permanent magnets-Approaches from the bottom". The group leaders from  Theoretical Condensed Matter Group at University of Texas at Arlington, School of Materials Science and Engineering at Georgia Institute of Technology  (Center for Nanostructure Characterization & Fabrication, High Strain-rate Impact Laboratory), Brown University, National High  Magnetic Field Laboratory, University of Maryland, Naval Research Laboratory, and Argonne National Laboratory, present their newest research results. During the  two days of meeting, a great issue related to a more close collaboration has also been discussed to strengthen the team's leading research efforts towards the further  improvement of nanostructured magnetic materials. Greeting by Dr. Ron Elsenbaumer, Vice President for Research of UT-Arlington, was given at the close session.

     

     

            The Department of Defense (DoD) on February 28, 2005, announced plans to award 33 research grants to 27 universities totaling about $15 million in fiscal year 2005 and about $29.2 million per year starting in fiscal year 2006 for a total of $146.6 million over five years.  These academic institutions, including UT-Arlington led team, will receive the grants to conduct multidisciplinary  research in 26 topic areas of basic science and engineering which will be made under the DoD Multidisciplinary University Research Initiative (MURI) program.  
            All awards are subject to the successful completion of negotiations between DoD research offices and the academic institutions.
              The MURI program is designed to address large multidisciplinary topic areas representing exceptional opportunities for future DoD applications and technology options.  The awards will provide long-term support for research, graduate students and laboratory instrumentation development that supports specific science and engineering research themes vital to national defense.
              The average award will be $900,000 a year over a three-year period.  Two additional years of funding will be possible as options, bringing the total award to five years.  Out-year funding is subject to satisfactory progress in the research and the availability of funding appropriations.
              This announcement is the result of a rigorous competition over many months under the MURI program.  In response to the MURI broad agency announcement solicitation, many letters of intent to submit proposals were received leading to 121 full proposals which were evaluated by DoD technical expert teams. (http://www.defenselink.mil/releases/2005/nr20050228-2141.html). The Program Award Winners Name List can be found here.

     

     

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Last Update: 01/20/06 12:24 PM