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Faculty Profile Last Modified Time: 12:29:39 PM Wed, 18 Jul 2018   Contact Information Dmitri Litvinov Associated Profiles  Professor, Electrical and Computer Engineering, Chemical and Biomolecular Engineering, University of Houston   Science & Engineering Research Center, Room No.: 1007    litvinov@uh.edu     713-743-4168    Web Link    Novel Magnetic Materials and Devices, Nanoscale Dimensions, Micro- and Nanomagnetic Materials and Devices, Magnetic Storage Technologies, Disk Drive Storage, Probe Storage, MEMS, MRAM    Associated Profiles Professional Preparation Research and Expertise Affiliations Appointments  Professional Preparation  Degree Major Institution Year  PhD Applied Physics University of Michigan 1999  MS Electrical Engineering University of Michigan 1997  MS Physics University of Miami 1994  BS General and Applied Physics Moscow Institute of Physics and Technology 1992  Research and Expertise Research Interests   My research interests span a range of topics related to the development and applications of novel magnetic materials and devices at nanoscale dimensions. These include micro- and nanomagnetic materials and devices directly related to the current and future magnetic storage technologies such as disk drive storage, probe storage based on MEMS and MRAM. Among the investigated issues are fabrication and device physics of magnetic probe heads at nanoscale dimensions (the recording heads with dimensions down to few tens of nanometers have been routinely fabricated using focused ion-beam nanofabrication techniques); development and characterization of nanocrystalline materials for advanced recording media applications; micromagnetic behavior of soft magnetic materials; recording properties of nanocrystalline alloy and superlattice-based media materials; recording processes at nanoscale dimensions, etc. Record track densities in excess of 400ktpi (~60nm track width) were demonstrated using above-mentioned nanoprobe recording heads and specially prepare media. The micromagnetic behavior of magnetic 'nanotubes' was for the first time experimentally observed. The current research activities are focused on applications of nanocrystalline materials and nanoscale devices for achieving extremely high density recording (above 1Terabit/in 2 ). The current state-of-the-art in magnetic recording is 160x40x10nm magnetic features (corresponding to areal density of 100Gbin/in 2) recorded into a magnetic recording medium. The individual magnetic grains forming the recording medium are ~9nm in diameter. At these dimensions, the conventional recording schemes employed today are rapidly approaching the fundamental (superparamagnetic) limit in areal bit density, above which the recording data become unstable. It is widely believed that longitudinal recording will run out of steam at approximately 200Gbin/in 2 . Perpendicular magnetic recording will enable to sustain the current great strides in technological advances for the next several generations of mass storage solutions. The technology is technically the closest alternative to conventional longitudinal recording, while it is capable of extending the superparamagnetic density limit beyond what is achievable with longitudinal recording. The recording densities above 1Terabit/in 2 (recording features as small as 50x12x10nm) are conceivable utilizing perpendicular recording. To support such a nanoscale technology, major innovations in both magnetic recording heads and media are necessary.  Publications/Creative Works Click here to search for this faculty member's publications on PubMed.  Affiliations  Research Consortia GCC Cluster NanoX  Appointments Title Department / School Institution Professor Electrical & Computer Engineering University of Houston

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