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Dissertations / Theses on the topic 'Magnetic records and recording'

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Published: 4 June 2021

Last updated: 29 July 2025

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1

Vâlcu, Bogdan F. "Studies in perpendicular magnetic recording /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2004. http://wwwlib.umi.com/cr/ucsd/fullcit?p3127623.

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2

Altekar, Shirish A. "Detection and coding techniques for magnetic recording channels /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9804513.

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3

Andersen, R., and W. Wendel. "An Auto-Calibration System for a Longitudinal Magnetic Recorder." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614661.

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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California<br>Multiple channel magnetic tape recording is often used for signal analysis of intelligence and telemetry data. To insure accuracy of the reproduced data, these systems require frequent calibration and alignment. As the number of tracks on these systems has increased, this task has become more time-consuming. Even with a well-trained technician, this task can take several hours at a minimum. To alleviate this problem, we developed a system for per

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4

ANDERSEN, R., and W. WENDEL. "AN AUTO-CALIBRATION SYSTEM FOR A LONGITUDINAL MAGNETIC RECORDER." International Foundation for Telemetering, 1989. http://hdl.handle.net/10150/614853.

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International Telemetering Conference Proceedings / October 30-November 02, 1989 / Town & Country Hotel & Convention Center, San Diego, California<br>Multiple channel magnetic tape recording is often used for signal analysis of intelligence and telemetry data. To insure accuracy of the reproduced data, these systems require frequent calibration and alignment. As the number of tracks on these systems has increased, this task has become more time-consuming. Even with a well-trained technician, this task can take several hours at a minimum. To alleviate this problem, we developed a system for per

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5

Wu, Zining. "Coding and iterative detection for magnetic recording channels /." Boston, Mass. [u.a.] : Kluwer Academic Publ, 2000. http://www.loc.gov/catdir/enhancements/fy0820/99049501-d.html.

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6

Morton, David Lindsay Jr. "The History of magnetic recording in the United States, 1888-1978." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/24235.

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7

Astbury, David Alan. "Computer aided modelling of the digital magnetic record and replay processes." Thesis, Manchester Metropolitan University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328940.

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8

Wismayer, Matthew P. "Small angle neutron scattering studies of magnetic recording media." Thesis, St Andrews, 2008. http://hdl.handle.net/10023/471.

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9

McPheters, Laura L. "Concatenated coding and iterative decoding for magnetic and optical recording." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/16018.

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10

Zhang, Yun. "MR playback characteristics and thermal stability of thin film media in high-density magnetic recording systems /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p9917958.

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11

Seberino, Christian. "Computational micromagnetic study of particulate media hysteresis and recording /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p9974106.

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12

Johnson, Janice K. "Adhesive and viscous effects of several lubricants at the slider/disk interface." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/16843.

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13

Arnold, Dieter M. "Computing information rates of finite-state models with application to magnetic recording /." Konstanz : Hartung-Gorre, 2003. http://www.loc.gov/catdir/toc/fy0609/2005530413.html.

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14

Wang, Xiaobin. "Studies on dynamic thermal reversal and transition jitter in magnetic materials /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC IP addresses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3099914.

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15

Caroselli, Joseph Peter. "Modeling, analysis, and mitigation of medium noise in thin film magnetic recording channels /." Diss., Connect online to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1998. http://wwwlib.umi.com/dissertations/fullcit?p9824646.

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16

Yao, Bo. "Fe/Pt n̳ multilayer thin film reactions to form L1₀ FePt and exchange spring magnets." Orlando, Fla. : University of Central Florida, 2008. http://purl.fcla.edu/fcla/etd/CFE0002416.

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17

Friedmann, Arnon A. "Measurements, characterization, and system design for digital storage /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1997. http://wwwlib.umi.com/cr/ucsd/fullcit?p9732719.

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18

Ramesh, Maganti V. "Magnetic stripe reader used to collect computer laboratory statistics." Virtual Press, 1990. http://liblink.bsu.edu/uhtbin/catkey/722464.

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This thesis is concerned with interfacing a magnetic stripe reader with an AT&T PC 6300 consisting of a 20 MB hard disk and with collecting laboratory usage statistics. Laboratory usage statistics includes the name and social security number of the student,along with other necessary details. This system replaces all manual modes of entering data, checks for typographical errors, renames the file containing a particular day's data to a file that has the current day's date as its new filename, and keeps track of the number of students for a particular day. This procedure will ensure security of

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19

Hudson, Guy Frederick 1962. "ELECTROPHORETIC CHARACTERISTICS OF CHROMIUM DIOXIDE IN NON-AQUEOUS SOLUTIONS (ZETA POTENTIAL, DISPERSION STABILITY)." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/276353.

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20

Berry, Robert D. "Dynamic viscoelastic properties of advanced magnetic tapes." Scholarly Commons, 2012. https://scholarlycommons.pacific.edu/uop_etds/807.

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The purpose of this thesis is to analyze the viscoelastic properties of current large digital storage magnetic tape materials, using a custom ultra-low frequency dynamic mechanical analyzer (DMA). Through the correlated effects of frequency and temperature, the long term mechanical properties of the magnetic tape can be simulated and used for predictive analysis of long term storage quality and stability of each individual tape given applicable storage conditions. Two magnetic tapes of primary interest reviewed in this paper are both current leading high capacity tapes, one having a poly(ethyl

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21

Miller, John. "High code rate, low-density parity-check codes with guaranteed minimum distance and stopping weight /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3090443.

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22

Orcutt, Edward Kerry. "Encoding of multi-track (d,k) modulation codes." Diss., The University of Arizona, 1992. http://hdl.handle.net/10150/185933.

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Multi-track run-length-limited (d,k) modulation codes were recently introduced as a method to increase storage densities in magnetic and optical recording systems. These codes are a generalization of the usual run-length-limited (d,k) codes and provide for increased storage density by relaxing the k-constraint and encoding multiple tracks in parallel. This dissertation focuses on methods of constructing such codes. Two methods are presented. The first uses state-splitting to construct multi-track (d,k) trellis codes. An example is presented in which a (1,3) trellis code is constructed having a

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23

Weissner, Stefan. "Numerical and experimental investigation of the load/unload behavior of subambient pressure hard disk drive sliders /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2001. http://wwwlib.umi.com/cr/ucsd/fullcit?p3027050.

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24

Dorfman, Vladimir. "Detection and coding techniques for partial response channels /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2003. http://wwwlib.umi.com/cr/ucsd/fullcit?p3094619.

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25

Surber, Greg A. "Record Progressions: Technology and its Role in the Development and Dissemination of Jazz." Ohio University Honors Tutorial College / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ouhonors1258571630.

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26

Mason, Terry, Fred Jr Thames, and John Howard. "‘NEW TECHNOLOGY’ DATA RECORDERS A TECHNOLOGY OVERVIEW." International Foundation for Telemetering, 2001. http://hdl.handle.net/10150/606457.

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International Telemetering Conference Proceedings / October 22-25, 2001 / Riviera Hotel and Convention Center, Las Vegas, Nevada<br>There are clear signs that data recorders using solid-state and disk-based technologies now represent a serious alternative to conventional linear and rotary tape recorders for a broad spectrum of data capture applications. As the number of RFQs specifying these so-called ‘new technology’ solutions increases, virtually every major manufacturer has responded with announcements of new off-the-shelf products. A NATO technical support team has even been tasked wit

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27

Olson, Ted. "Recording Review of Old Hat Records." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/1161.

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28

Bashir, Muhammad Asif. "Alternative magnetic recording technologies." Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.555664.

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Presented here are micromagnetic simulations to investigate alternative magnetic recording technologies including bit patterned media and domain wall storage. I have used a finite element/boundary element method to investigate the dynamics of the write process in magnetic recording systems; and a nudged elastic band method is used to calculate the thermal stability of written bits. Microwave assisted magnetization reversal of single phase media and exchange spring media is investigated. A reduction of the switching field by about a factor of two can be found in both single phase and exchange s

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29

Burkert, Till. "Materials for Magnetic Recording Applications." Doctoral thesis, Uppsala University, Department of Physics, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5800.

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<p>In the first part of this work, the influence of hydrogen on the structural and magnetic properties of Fe/V(001) superlattices was studied. The local structure of the vanadium-hydride layers was determined by extended x-ray absorption fine structure (EXAFS) measurements. The magnetic ordering in a weakly coupled Fe/V(001) superlattice was investigated using the magneto-optical Kerr effect (MOKE). The interlayer exchange coupling is weakened upon alloying with hydrogen and a phase with short-range magnetic order was observed.</p><p>The second part is concerned with first-principles calculati

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30

Brown, Stephen J. C. "Analytical investigations in magnetic recording." Thesis, University of Plymouth, 2003. http://hdl.handle.net/10026.1/2741.

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The Fourier method is used to provide new analytic solutions for idealized mathematical models of double-element shielded magnetoresistive (MR) recording heads. The general two-dimensional model allows analysis of various recording head configurations; a single pole head, a ring head, a dual stripe head and a differential head. The analysis accommodates both longitudinal recording (with no soft magnetic underlayer present) and perpendicular recording (in the presence of a soft underlayer). Typical field, spectral response function and output voltage pulse plots for double-element MR heads are

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31

Law, Eugene L. "DOUBLE DENSITY ANALOG MAGNETIC RECORDING." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615562.

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International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, Nevada<br>This paper discusses measured performance of double density recording. Tests were conducted using different recorders, playback machines, and magnetic tapes. The main topics discussed are slot signal-to-noise ratio (SNR) and high density digital bit error rate (BER).

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32

Hedeman, Walter R. Jr. "WRITE NOISE IN MAGNETIC RECORDING." International Foundation for Telemetering, 1985. http://hdl.handle.net/10150/615733.

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International Telemetering Conference Proceedings / October 28-31, 1985 / Riviera Hotel, Las Vegas, Nevada<br>A novel source of noise is identified and described in this study. If a continuous recording medium is less than perfectly uniform, a given quantity may be recorded differently at different locations in the medium. Inadvertent “encoding” occurs, embedding noise in the signal. Symmetrical sideband noise power results from amplitude and phase modulation of the signal stream by the nonuniform recording medium. “Write noise”, so-called because writing is required, is correlated in amplitud

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33

Mercer, Tim. "Particulate dispersions for magnetic recording media." Thesis, University of Central Lancashire, 2001. http://clok.uclan.ac.uk/21059/.

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The study of a magnetic recording media dispersion has been carried out using hindered settling analysis, the purpose of which was to probe the equilibrium state structure in zero applied magnetic field. The system chosen for the main study was based on a commercial formulation of a y-Fe 203 suspension of 0.3 j.tm length acicular particles, with aspect ratio 5: 1, that was used to manufacture a back-up/archive tape. From the sedimentation analysis, a large fraction of fluid (- 86 % by volume of the settling unit) was estimated to be trapped within the clusters of particles that make-up the ove

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34

Gonzalez-Fernandez, Maria Angeles. "Texture effects in magnetic recording media." Thesis, University of York, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.428463.

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35

Sundar, Vignesh. "Templated Growth of Magnetic Recording Media." Research Showcase @ CMU, 2015. http://repository.cmu.edu/dissertations/606.

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Current and potential next-generation magnetic recording technologies are based on the writing and reading of bits on a magnetic thin film with a granular microstructure, with grains of the magnetic material surrounded by an amorphous segregant. In order to realize the highest achievable data storage capabilities, there is a need for better control of the magnetic media microstructure, particularly in terms of minimizing grain size and grain boundary thickness distributions. In this work, a guided magnetic media growth is attempted by creating a pre-fabricated template with a specific material

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36

Olson, Ted. "Recording Review of Sam Phillips and the Sun Records Legacy." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etsu-works/1164.

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37

Verdes, Claudiu Georgel. "Models of microstructure and magnetic properties for magnetic recording media." Thesis, Durham University, 2003. http://etheses.dur.ac.uk/3091/.

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Three computational models have been developed to simulate magnetic properties of granular media, particulate media microstructures and self-assembled systems. The granular media model uses an energy minimisation approach to describe the magnetic properties of a system of randomly oriented single-domain particles taking into account dipolar and exchange interactions as well as thermal effects. At low temperature dipolar interactions produce flux closure vortex structures leading to a decrease of both remanence and coercivity. When thermal effects become important, dipolar interactions lead to

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38

DEL, BONO ELISA M. "ARCHITECTURAL CONSERVATION RECORDS: DRAWING UPON MUSEUM AND ARCHAEOLOGICAL CONSERVATION RECORDING MODELS." The University of Arizona, 1995. http://hdl.handle.net/10150/555241.

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39

Shute, Hazel Anne. "Mathematical analysis of novel magnetic recording heads." Thesis, University of Plymouth, 1995. http://hdl.handle.net/10026.1/2392.

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As a contribution to increasing the areal density of digital data stored on a magnetic recording medium, this thesis provides mathematical analyses of various magnetic recording heads. Each of the heads considered here is for use in a perpendicular recording system, writing to or reading from a multi-layer medium which includes a high magnetic permeability layer between the data storage layer and the substrate. The exact two-dimensional analysis is performed in each case by one of two methods: either Fourier analysis or conformal mapping. The types of heads analysed include conventional styles

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40

Noyau, R. H. "Digital magnetic recording in thin film media." Thesis, Manchester Metropolitan University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233573.

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41

BALCH, KRIS S. "AUTOCORRELATION APPLIED TO THE MAGNETIC RECORDING CHANNEL." International Foundation for Telemetering, 1986. http://hdl.handle.net/10150/615311.

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International Telemetering Conference Proceedings / October 13-16, 1986 / Riviera Hotel, Las Vegas, Nevada<br>Today I will describe the application of the Autocorrelation function to the Magnetic Recording Channel. I will explain what is an autocorrelated function, how does it behave and where may it be applied in the Magnetic Recording channel. There will be a brief description of Kodak San Diego’s Autocorrelator and how we apply this technology. If I have done my job well at the end of this presentation you will have enough knowledge about autocorrelation to access your own application. Bef

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42

Harrison, Matthew J. K. "The tribology of laminated magnetic recording heads." Thesis, Aston University, 1999. http://publications.aston.ac.uk/7990/.

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This thesis investigates the mechanisms that lead to pole tip recession (PTR) in laminated magnetic recording heads (also known as "sandwich heads"). These heads provide a platform for the utilisation of advanced soft magnetic thin films in practical recording heads suitable for high frequency helical scan tape recording systems. PTR results from a differential wear of the magnetic pole piece from the tape-bearing surface of the head. It results in a spacing loss of the playback or read signal of 54.6dB per recording wavelength separation of the poles from the tape. PTR depends on the material

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43

Krishnan, Anantha Raman. "Signal Processing for Two-Dimensional Magnetic Recording." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/202984.

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With magnetic storage devices already achieving storage densities of up to 400 Gigabits per square inch (Gb/in2), the state of the art is rapidly approaching theoretical limits (dictated by thermal stability concerns). Hence, there is an eort in the industry to develop alternative magnetic storage technologies. Two-dimensional magnetic recording (TDMR) is one such candidate technology. In contrast to other technologies(e.g. heat-assisted magnetic recording [1], bit-patterned media [2]) which rely on signicant changes being made to the recording medium, TDMR relies on the use of traditional rec

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44

Patton, Steven T. "Tribology of advanced magnetic tapes and heads for ultrahigh-density magnetic recording /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487950658545809.

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45

Choi, Chulmin. "Nano fabrication approaches for patterned magnetic recording media." Diss., [La Jolla] : University of California, San Diego, 2010. http://wwwlib.umi.com/cr/ucsd/fullcit?p3404268.

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Thesis (Ph. D.)--University of California, San Diego, 2010.<br>Title from first page of PDF file (viewed June 10, 2010). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references (leaves 82-88).

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46

McCann, Steven Michael. "Remanent state noise in particulate magnetic recording media." Thesis, University of Central Lancashire, 1998. http://clok.uclan.ac.uk/20985/.

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Remanent state noise is the variation in stray flux emanating from a magnetic recording medium which is in a remanent state of magnetisation. A portion of this noise is related to the magnetic microstructure of the recording medium. This study had two main objectives. The first was to devise and implement hard and software which was capable of capturing, storing and manipulating remanent state time series from a tape sample. The noise measurement apparatus was set-up to magnetise tape samples according to the principal remanent magnetisation curves. A noise study, using commercially available

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47

Unwin, Marion Elizabeth. "Broadband ferromagnetic resonance studies of magnetic recording media." Thesis, Keele University, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.414759.

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FMR spectroscopy is widely used for the characterization of many types of magnetic materials for use in an extensive range of applications. It is a powerful tool for probing both the magnetic properties and physical aspects of a material. In recent years in particular, there has been some interest in its use to study commercial recording media. However, there are a number of limitations inherent in the conventional method of observing FMR that restricts its usefulness and popularity as a research technique. The high, single frequency operation of the spectrometer makes broadband, frequency dep

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48

Loze, M. K. "Computer aided modelling of digital magnetic recording systems." Thesis, Manchester Metropolitan University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379157.

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49

Shah, Purav. "Equalisation techniques for multi-level digital magnetic recording." Thesis, University of Plymouth, 2008. http://hdl.handle.net/10026.1/2617.

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A large amount of research has been put into areas of signal processing, medium design, head and servo-mechanism design and coding for conventional longitudinal as well as perpendicular magnetic recording. This work presents some further investigation in the signal processing and coding aspects of longitudinal and perpendicular digital magnetic recording. The work presented in this thesis is based upon numerical analysis using various simulation methods. The environment used for implementation of simulation models is C/C + + programming. Important results based upon bit error rate calculations

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50

Fayyaz, Ubaid Ullah. "Polar code design and decoding for magnetic recording." Diss., Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/52994.

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Powerful error-correcting codes have enabled a dramatic increase in the bit density on the recording medium of hard-disk drives (HDDs). Error-correcting codes in magnetic recording require a low-complexity decoder and a code design that delivers a target error-rate performance. This dissertation proposes an error-correcting system based on polar codes incorporating a fast, low-complexity, soft-output decoder and a design that is optimized for error-rate performance in the magnetic recording channel. LDPC codes are the state-of-the-art in HDDs, providing the required error-rate performance on h

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