Study of bit patterned fept media for high density magnetic recording

... STUDY OF BIT- PATTERNED FePt MEDIA FOR HIGH DENSITY MAGNETIC RECORDING SHREYA KUNDU B.Sc Electronics (Hons), University of Delhi, India A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF PHILOSOPHY ... phase diagram of FePt 32 Figure 2.10 (a) Conventional media and (b) bit patterned media 33 Figure 2.11 Two different approaches of creating patterned m...

Ngày tải lên: 09/09/2015, 11:29

... densities up to 3.5 Tb/in2 [43] 1.7 Heat- Assisted Magnetic Recording The concept of heat- assisted magnetic recording (HAMR) is similar to the concept of magneto-optical recording proposed by Katayama ... by thermal fluctuations but is prevented by an energy 11 barrier given by the product of the magneto crystalline energy and the volume of the magnetic...

Ngày tải lên: 09/09/2015, 08:17

... 2.1) obtained from Mannesmann Demag (a company that manufactures and installs container hoists) shows that Hong Kong has many high- rise factories and warehouses that utilize container cranes to ... arrival rates is analyzed 24 CHAPTER ANALYTICAL STUDY OF PROPOSED CONTAINER DISTRIBUTION SYSTEM Queueing arises whenever there is more demand for service than there is capaci...

Ngày tải lên: 26/11/2015, 12:46

... phenomenon of superparamagnetism whereby magnetic grains behave like paramagnetic atoms at high temperature due to thermal agitation [4] The changes of magnetization configuration in magnetic grains ... information We can change the information stored within magnetic grains by applying a magnetic field to change the state of M A strong uniaxial magnetic field can align M o...

Ngày tải lên: 26/09/2015, 09:56

... voltage and temperature effects Keywords: magnetic recording, dynamics, access system, piezoelectric actuators, probability, reliability DYNAMICS AND RELIABILITY OF ACCESS SYSTEM OF HIGH DENSITY MAGNETIC ... He Zhimin Doctor of Philosophy Mechanical Engineering Dynamics and Reliability of Access System of High Density Magnetic Recording A...

Ngày tải lên: 15/09/2015, 17:10

... Contents Introduction 1.1 Background on Magnetic Recording 1.2 The Magnetic Recording Channel 1.3 Signal Processing in Magnetic Recording 1.4 Nonlinearities ... counterparts This thesis focuses mainly on nonlinearities found in longitudinal recording A dominant and well known nonlinearity found in magnetic recording is termed nonlinear transition shift (NLTS) ... Per...

Ngày tải lên: 27/11/2015, 12:23

... presented a study of document representations for sentiment analysis using term weighting functions adopted from information retrieval and adapted to classification The proposed weighting schemes ... provides information about the general distribution of term i amongst documents of all classes, without providing any additional evidence of class preference The utilizat...

Ngày tải lên: 20/02/2014, 04:20

... Conclusions The sensing materials of WO loaded with wt.% metal oxides were prepared and applied for NH and NO detection, and several composition materials with good responses, both to NH and NO, were ... NO. , and fast response to NH and NO compared with pure WO The materials of WO loaded with wt.% Cr, La, Pr, Sm, Gd, Er, Tm and Yb showed good responses to N...

Ngày tải lên: 20/03/2014, 13:08

... supply chain performance across the paper industry The purpose of the mail survey was to gather comprehensive information from a larger number of paper mills about their supply chain management practices ... chains based on site visits Data was collected via a survey of pulp and paper mills in the US and Canada The unit of analysis was a single pulp o...

Ngày tải lên: 24/03/2014, 05:20

... constructs at various loads after all 3000 cycles have elapsed for the load Clavicle Pair Displacement at 180N for plate Displacement at 180N for pin Displacement at 360N for plate Displacement forat ... fixation is a less invasive alternative A retrospective clinical study by Wu et al compared plate to IM fixation for aseptic nonunions [5] A biomechanical study...

Ngày tải lên: 20/06/2014, 01:20

... article as: Faisal and Darus: A study of Pescar’s univalence criteria for space of analytic functions Journal of Inequalities and Applications 2011 2011:109 Submit your manuscript to a journal and ... identical to the operator Ga given in Lemma 1.2 which was introduced by Pescar in 1996 Main univalence criteria for analytic function In this section, we make a...

Ngày tải lên: 20/06/2014, 22:20

... Cite this article as: Auger et al.: A comparative study of non-covalent encapsulation methods for organic dyes into silica nanoparticles Nanoscale Research Letters 2011 6:328 Submit your manuscript ... Senarath-Yapa MD, Phimphivong S, Coym JW, Wirth MJ, Aspinwall CA, Saavedra SS: Preparation and characterization of poly(lipid)-coated, fluorophore-doped silica nanop...

Ngày tải lên: 21/06/2014, 04:20

... (16) For example, an SNR of 36 (15.6 dB) is required to achieve a BER of 10−9 2.5 Channel Bandwidth The bandwidth of the indoor channel is computed from the Fourier transform of the channel ... a uniform and full coverage of power distributions and this can be achieved by modifying some key parameters of the multibeam transmitter, such as the number of transmitters, ele...

Ngày tải lên: 21/06/2014, 17:20

... real-time quality measurement Indeed, for the purpose of real-time quality monitoring and control on a network-wide scale, objective speech quality measurement is the only viable option Objective measurement ... recent quality measurement research (e.g., see [12, 32]) Conclusions We have investigated the effects of wireless-VoIP degradation on the performance...

Ngày tải lên: 21/06/2014, 20:20

... principles of life skills education for high school pupils through out -of class-hour educational activities 1.3.2.1 The nature of life skills education for high school pupils through out -of- class-hour ... efficiency of proposed methodologies of educating living skills to high school pupils via recreation activities - Affirm positive impacts of experim...

Ngày tải lên: 22/07/2014, 14:07