The future of magnetic data storage techology

Thompson, David A.; Best, J. S.

doi:10.1147/rd.443.0311

Cited by 279 publications

(135 citation statements)

References 12 publications

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“…Fortunately, our quest for the appropriate MQCA technology may be able to follow the current developments in the magnetic recording hard disk drive (HDD) industry. To further increase the bit density of HDDs, continuous thin-film magnetic media is being replaced by a pre-patterned media 42 where the bits are stored as the magnetization of single-domain nanoelements, just as in the case of MQCA. Further similarities are that the nanomagnets are placed in regular arrays, and have strict requirement for uniformity.…”

Section: Orlov Et Almentioning

confidence: 99%

Magnetic Quantum-Dot Cellular Automata: Recent Developments and Prospects

Orlov

Joshi‐Imre

Csaba

et al. 2008

Journal of Nanoelectronics and Optoelectronics

105

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Quantum-dot Cellular Automata (QCA) is a computational paradigm that uses local physical coupling between nominally identical bistable building blocks (cells) assembled into arrays to perform binary logic functions. QCA offers low power dissipation and high integration density of functional elements. Depending upon the choice of local fields causing interactions between the cells, different types of QCA are possible, such as magnetic, electronic, or optical. Here we discuss recent developments in the field of magnetic QCA (MQCA) all-magnetic logic where planar, magnetically-coupled, nanometer-scale magnets are assembled into the networks that perform binary computation. The nanomagnets are defined by electron beam lithography. We demonstrate the operation of basic elements of MQCA architecture such as binary wire, three input majority logic gate, and their combination, and discuss interfacing such systems with conventional CMOS-based logic.

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Section: Orlov Et Almentioning

confidence: 99%

Magnetic Quantum-Dot Cellular Automata: Recent Developments and Prospects

Orlov

Joshi‐Imre

Csaba

et al. 2008

Journal of Nanoelectronics and Optoelectronics

105

View full text Add to dashboard Cite

show abstract

“…However, in most of the cases theories were limited to specific problems where intricate structures at the interfaces were simplified. Until now, EB effects have been exploited in several technological applications such as read head of recording devices [39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54], magnetoresistive random access memories (MRRAM) [55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76] and it has been proposed for the technological applications in stabilizing magnetization of superparamagnetic nanoparticles [77,78,79,80] or to improve coercivity and energy product of the permanent magnets [81,82,83,84].…”

Section: Introductionmentioning

confidence: 99%

Exchange bias effect in alloys and compounds

Giri

Patra

Majumdar

2011

J. Phys.: Condens. Matter

320

225

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Abstract. The phenomenology of exchange bias effects observed in structurally single-phase alloys and compounds but composed of a variety of coexisting magnetic phases such as ferromagnetic, antiferromagnetic, ferrimagnetic, spin-glass, clusterglass, disordered magnetic states are reviewed. The investigations on exchange bias effects are discussed in diverse types of alloys and compounds where qualitative and quantitative aspects of magnetism are focused based on macroscopic experimental tools such as magnetization and magnetoresistance measurements. Here, we focus on improvement of fundamental issues of the exchange bias effects rather than on their technological importance.

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“…However, with decreasing particle size, we come into conflict with the superparamagnetism caused by the reduction of the anisotropy energy per particle [35][36][37][38][39]. To overcome this problem, the use of hard magnetic nanomaterials is required.…”

Section: Control Of the Co Crystallinitymentioning

confidence: 99%

From the Co Nanocrystals to Their Self-Organizations: Towards Ferromagnetism at Room Temperature

Lisiecki

2012

Acta Phys. Pol. A

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Here, we show that rather uniform 7 nm Co nanocrystals self-organize into long-range two-and three--dimensional superlattices. Due to this ability we have to control the mesoscopic ordering; unexpected intrinsic collective chemical and physical properties have been discovered. By annealing treatment, a crystallographic transition from a polycrystalline fcc-to single crystalline hcp-Co phase is obtained leading to a drastic change in the magnetic properties such as an increase in the blocking temperature that can reach a value close to room temperature. Neither coalescence between nanocrystals nor oxidation of the Co material is observed. In these artificial solids, when the individual nanocrystal anisotropy is low, super-spin glass behavior is observed.

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The future of magnetic data storage techology

Cited by 279 publications

References 12 publications

Magnetic Quantum-Dot Cellular Automata: Recent Developments and Prospects

Magnetic Quantum-Dot Cellular Automata: Recent Developments and Prospects

Exchange bias effect in alloys and compounds

From the Co Nanocrystals to Their Self-Organizations: Towards Ferromagnetism at Room Temperature

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