Ami Berkowitz received his Ph.D. in physics from the University of Pennsylvania in 1953. He was employed by the Franklin Institute Laboratories in Philadelphia from 1947 to 1960 where he was manager of the Magnetism and Thermoelectricity Division. He was with IBM from 1960 to 1968 initially at the Research Laboratory at Yorktown Heights, NY, and then as manager of the Materials Branch at the Components Division in Burlington, VT. From 1968 to 1986, Dr. Berkowitz was at the General Electric R&D Center in Schenectady, NY. There, he was active in electron beam addressed memories, thermomagnetic recording, magnetic tagging, magnetic printing, magnetic surface phenomena, amorphous and crystalline particles, and the development of spark erosion method for particle production.
In 1986, he came to UCSD as an Endowed Chair Professor in the Physics Department, and to CMRR to establish the materials group. At present, he is a Research Professor at CMRR and the Physics Department. Dr. Berkowitz has published extensively in the scientific and patent literature and with E. Kneller co-edited "Magnetism and Metallurgy", published by Academic Press. He has also given many invited talks, and has been twice appointed a Distinguished Lecturer for the IEEE Magnetics Society, and effective January 1997, he was elected to fellowship status in the American Physical Society.
Prof. Berkowitz's group is developing new materials for read and write heads and for thin film and particulate media, with the objective of meeting the requirements of ultra-high density storage. Some recent achievements have been the introduction of stable antiferromagnetic oxides for MR head biassing, the development of heterogeneous alloys exhibiting Giant Magneto-Resistance, and the demonstration of Giant Magneto-Impedance in thin films.
There is a strong emphasis on utilizing the most advanced characterization techniques, in order to establish a rigorous basis for understanding and optimizing materials properties. Some current programs are: investigating surface treatment and composite structures for thin film storage media; developing new stable particulate media; examining the influence of diminishing size on the properties, and their stability in time, of the magnetic subunits in films and particles; defining the basic structural and physical parameters involved in the biassing of ferromagnetic films by antiferromagnetic materials; producing the optimum magneto-transport properties in granular and heterogeneous materials, as well as in spin polarized tunnel junctions.Past Project Scientist(s): Fred Parker Postgraduate Researcher(s): Staff Research Associate(s): Graduate Student(s): Student Name: Phi Nguyen Email: phi@UCSD.edu Phone: (858) 534-7462 Fax: (858) 534-2720 Office: CMRR Room 108 Alumni: Student Name: Geoff Beach Dissertation: Magnetic Properties Of Coxfe100-X¬ Metal/Native Oxide Multilayers [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 2003 Student Name: Matthew Carey Dissertation: Coxni1-Xo Thin Films and Coo-Nio Superlattices: Structure, Magnetic Properties And Exchange Anisotropy With Ni81fe19 [Abstract only] Degree: Ph.D. Year: 1993 Student Name:Chulmin (Edward) Choi * Dissertation: Nano Fabrication Approaches for Patterned Magnetic Recording Media [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 2010 Student Name: Richard Kodama Dissertation: Finite Size and Interface Effects in Magnetic Oxide Nanoparticles and Films [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 1997 Student Name: David Margulies Dissertation: Origin of the Anomalous Magnetic Behavior in Single Crystal Fe304 Films and Cobalt Surface Treatment of Iron Oxide Thin Films [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 1996 Student Name: Christopher Platt Dissertation: Magnetic and Transport Properties of Spin Dependent Tunnel Junctions [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 2000 Student Name: Edward P. Price Dissertation: Characterization of Transport Processes in Magnetic Tunnel Junctions [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 2001 Student Name: Sandrawattie Sankar Dissertation: Correlation of Microstructural, Magnetic, And Transport Properties Of Composite Metal-Insular Films [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 2000 Student Name: Steven Slade Dissertation: Investigation of The Neel Model Of Thermal Activation In Heterogeneous Co-Ag Alloy Films Through The Use Of Dynamic Susceptibility Measurements [Abstract only] Degree: Ph.D. Year: 1994 Student Name: Kentaro Takano Dissertation: Exchange Anisotropy in Thin Film Bilayers Of Nickel Cobalt Monoxide And Various Ferromagnetic Materials [Abstract] [PDF UCSD only] Degree: Ph.D. Year: 1998
*jointly supervised with Prof. Sungho Jin - MAE Dept.