R. RAMESH
Department of Materials Science and Engineering
And Department of Physics
Ph : 510-642-2347
FAX : 510-643-5792
email:rramesh@berkeley.edu

 


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EDUCATION
EMPLOYMENT
RESEARCH INTERESTS
HONORS AND AWARDS

PUBLICATIONS, TALKS AND PATENTS
PROFESSIONAL ACTIVITIES
SUMMARY OF RESEARCH ACCOMPLISHMENTS
 
     

EDUCATION

 
   

1983-1987


1980-1983



1977-1980

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M.S, Ph.D. in Materials Science , University of California, Berkeley


B.E. in Metallurgy, Indian Institute of Science, Bangalore, India


B.S. in Chemistry, Madras University, Madras, India

 

         
   

 

EMPLOYMENT

 
     

Jan 2004 - present

 

August 1999 - Dec 2003

 

Jan. 1995 - Aug 1999

 

Jan.1989- Jan. 1995

 

Sept.1987 - Dec. 1988

 


Aug.1983 - Aug.1987

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Professor, University of California, Berkeley

 

 

Professor, Distinguished University Professor, University of Maryland, College Park


Associate Professor, University of Maryland, College Park

 


Member of Technical Staff, Bell Communications Research, Red Bank

 


Postdoctoral Associate, NCEM, Lawrence Berkeley Laboratory

 

 

Lawrence Berkeley Laboratory, University of California, Berkeley

         
     

RESEARCH INTERESTS

 
     

Thin film growth and materials physics of complex oxides: Structure-Property-Processing interrelationships ; Crystalline Oxides on Semiconductors ; Functional metal oxide thin film deposition and processing for microelectronic, magneto-electronic, optical and high frequency applications.

Oxide thin film heterostructures : growth mechanisms and defect structures; physics of magneto-transport and electro-transport ; half-metallic ferromagnets; transport phenomena in highly correlated systems ; Multiferroic oxide heterostructures ; size effects ; self-assembled oxide nanostructures.

Nanoscale Characterization : Understanding Materials Physics at the nanoscale using Scanned Probes ; Applications of scanning force microscopy to study domains, switching and polarization dynamics in ferroic thin films ; scaling studies using electric and magnetic force microscopy.

Application of TEM techniques to solving materials problems; high resolution imaging of defect and crystal structure; analytical electron microscopy and micro-diffraction techniques; Lorentz imaging of domains.

Materials Processing for Devices : Nano-fabrication technologies; novel physical phenomena in complex electronic and magnetic materials with shrinking dimensions; dry etching technologies for device fabrication.

Information Technologies : Non-volatile information storage technologies ; Ferroelectric Memories ; Dynamic Random Access Memories ; Field effect devices ; Thin film magnetic and magneto-resistive devices; CMR thin films and heterostructures ; oxide spin valves and magnetic tunnel junctions.

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ACADEMIC HONORS AND PROFESSIONAL AWARDS

 
     

2005 David Adler Lectureship Award of the American Physical Society;Distinguished University Professor, University of Maryland, College Park, 2003 ; Fellow, American Physical Society, 2001 ; A. James Clark School of Engineering Faculty Outstanding Research Award, 2001 ; Alexander von Humboldt Senior Scientist Prize, 2001 ; International Symposium on Integrated Ferroelectrics, Award for Outstanding Achievement in Integrated Ferroelectrics, 2000 ; Distinguished Research Faculty Fellow, University of Maryland 1999-2000; Bellcore Corporate Award, 1994, 1993, 1992 ; Earl R. Parker Fellowship, American Society for Metals, 1987; Graduate Student Award, Materials Research Society , 1987 ; Ross M. Tucker Award, Intel Corporation and N. California Chapter of AIME, 1986-1987 ; James Monroe McDonald Scholarship, 1986-1987 ; Regent's Fellowship, University of California, Berkeley, 1984-1985; Vidya Bharati Award in Metallurgy, Indian Institute of Metals, 1983 ; K.K.Mullick Gold Medal in Metallurgy, 1983 ; National Merit Scholarship during B.E., 1980-1983 ; College Gold Medal, 1980 ; National Merit Scholarship during B.Sc, 1977-1980.

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PUBLICATIONS, TALKS AND PATENTS

 
     

Over 250 papers, reviews and monographs covering magnetic materials, recording materials, magnetic and magnetoresistive metal oxides, high temperature superconductors, ferroelectrics, dielectrics, piezoelectrics and relaxors, semiconductor heterostructures and advanced transmission electron microscopy techniques applied to materials characterization. Over 8000 citations that place him in the top-300 (among approximately 270,000 worldwide).

Journals include Science, Nature, Applied Physics Letters, Journal of Applied Physics, Journal of Materials Research, Integrated Ferroelectrics, Journal of Magnetism and Magnetic Materials, Annual Reviews of Materials Science, Physical Review Letters, Physical Review B, Materials Science and Engineering B, Jl. of Electronic Materials, Journal of Electroceramics

Presented over 50 Invited talks at International Conferences, Symposia and Workshops.

16 Patents issued and 11 filed.

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PROFESSIONAL ACTIVITIES

 
     

Member: Materials Research Society, American Physical Society, ASM/TMS;

Editorial Board: "Integrated Ferroelectrics" Journal of Electroceramics ; International Advisory Board for the International Symposium on Integrated Ferroelectrics ; Member of Editorial Board, Journal of Applied Physics and Applied Physics Letters (1998-2001) ; Jl. of Electroceramics ; Journal of Materials Research.

Member of TMS John Bardeen Award Committee

Journal Review : Science, Nature, Jl. of Appl. Phys., Appl. Phys. Lett., Jl. of Materials Research, Jl. of Electronic Materials ; Jl. of Electroceramics ; Thin Solid Films.

Symposium Co-Organization: International Conference on Electronic Materials, 1990; MRS Symposia" Defect structure in oxide thin films", April 1992; " Epitaxial oxide thin films and heterostructures", April 1994; " Ferroelectric thin films IV", December 1994; " Ferroelectric thin films V", April 1996 ; International Oxide Electronics Workshop, 1997, 1998 and 1999 ; APS March Meeting Focus Topic Symposium on Dynamics in Ferroelectrics and Dielectrics, 2001 and 2002 ; MRS Fall Symposium on Polarization Dynamics in Ferroic Materials, 2001 ;

Technical Program Chair, International Symposium on Integrated Ferroelectrics-1999, 2003

Program Review : National Science Foundation SBIR Programs ; MRSEC Programs ; Program for Women in Engineering ; International Programs ; Department of Energy Program Reviews

Consultant : Bellcore, Motorola, Candescent, Inc., Tachyon Semiconductor, Intematix Corporation, Sponsera, Inc., Fujitsu, Solid State Photonix, Spectalis, Inc.

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      SUMMARY OF KEY RESEARCH ACCOMPLISHMENTS
 
     

Professor Ramesh’s work over the past 10+ years has spanned a broad range of novel metal oxide materials, with a specific focus on the Science and Technology of functional multicomponent perovskites. He has made numerous pioneering contributions pertaining to thin film growth by pulsed laser deposition, creation of novel device structures and their characterization using advanced probes. In 1988-89, his effort was among the first to identify the atomic structure of defects in YBCO thin films and the structure and chemistry of the "2223" BSCCO superconductor. His original electron microscopy studies led to the template approach for the growth of a-axis oriented YBCO films.

His landmark contributions in ferroelectric perovskites came through the recognition that conducting oxide electrodes are the solution to the problem of polarization fatigue, which for 30 years, remained an enigma and unsolved problem. This contribution is now recognized worldwide with many industrial and research laboratories implementing such an approach. His original demonstration came through the use of epitaxial perovskite thin films deposited by pulsed laser deposition. He soon extended this to polycrystalline films, deposited by pulsed laser deposition as well as by sputtering, thus paving the way for a commercially viable, reliable ferroelectric memory technology. His subsequent work in the area of ferroelectric thin films has led to several highly cited, seminal contributions, including : novel template approaches to control the crystallographic orientation of cubic perovskites ; the understanding of the impact of point defects on ferroelectric properties ; on the use of piezo force microscopy (PFM) to understand the nanoscale origins of polarization relaxation in single grains, and a very unique combination of PFM and focused ion beam lithography (FIB) to enable an understanding of the scaling laws governing the ferroelectric polar state. He currently leads a MRSEC Interdisciplinary Research Group that is focused on understanding the materials physics and polarization dynamics in ferroelectric and dielectric thin films.

In 1994, in collaboration with S. Jin (Lucent Technologies), he initiated research into manganite thin films and they coined the term, Colossal Magnetoresistive (CMR) Oxides ; the paper published in Science is the 4th highest cited paper (more than 1500 citations). This work was the starting point for an intense international R&D effort on these materials, with several promising approaches for new devices. At Maryland, he continues to pursue key scientific and technological problems in half metallic magnetic oxides within a framework of multicomponent oxide thin films and heterostructures. His work in this field has also led to the discovery of novel field effect devices that combine the properties of ferroelectric and magnetic perovskites. He has published over 250 papers in many internationally reputed journals including Science, Nature, Physical Review Letters, Applied Physics Letters, Physical Review B, Journal of Applied Physics and the Journal of Materials Research. He has been issued 16 patents with 11 more under consideration. He has organized several international conferences and symposia under the MRS framework, in the area of multicomponent oxides. He served on the Editorial Board of Journal of Applied Physics, Applied Physics Letters, and is currently on the editorial board of Integrated Ferroelectrics, Journal of Materials Research and Journal of Electroceramics. His work is cited extensively (over 8000 citations), which ranks among the top 300 physicists around the world in the Physics Citation Index. His pioneering work in the field of multicomponent oxides has been recognized worldwide. He was honored by the International Symposium on Integrated Ferroelectrics with an Outstanding Achievement Award in 2000. In 2001, he was awarded the Humboldt Senior Scientist Prize by the Alexander von Humboldt Foundation, the A. James Clark School of Engineering Faculty Outstanding Research Award, Fellowship in the American Physical Society and a Distinguished University Professorship at the University of Maryland, College Park.

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