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Spin torque driven nano-spintronic d...

Carnegie Mellon University.

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Spin torque driven nano-spintronic devices.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Spin torque driven nano-spintronic devices./
Author:	Zhu, Xiaochun.
Description:	198 p.
Notes:	Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3856.
Contained By:	Dissertation Abstracts International68-06B.
Subject:	Physics, Electricity and Magnetism. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3270861
ISBN:	9780549086659

Spin torque driven nano-spintronic devices.
Zhu, Xiaochun.

Spin torque driven nano-spintronic devices. - 198 p.

Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3856.

Thesis (Ph.D.)--Carnegie Mellon University, 2007.

Spin momentum transfer, an effect first predicted theoretically and later observed by carefully designed experiments, has found its use in current-perpendicular-to-plane (CPP) magnetic devices over the past decade. Although extensive research on this subject has been conducted both experimentally and theoretically, the understanding of its effect and impact on the performance of actual magnetic devices with finite dimensions at nanometer scale are still far from complete. Innovations based on its utilization for novel devices application have also been rare.

ISBN: 9780549086659Subjects--Topical Terms:

1019535
Physics, Electricity and Magnetism.

Spin torque driven nano-spintronic devices.
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020 $a 9780549086659
035 $a (UMI)AAI3270861
035 $a AAI3270861
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100 1 $a Zhu, Xiaochun. $3 1036164
245 1 0 $a Spin torque driven nano-spintronic devices.
300 $a 198 p.
500 $a Source: Dissertation Abstracts International, Volume: 68-06, Section: B, page: 3856.
502 $a Thesis (Ph.D.)--Carnegie Mellon University, 2007.
520 $a Spin momentum transfer, an effect first predicted theoretically and later observed by carefully designed experiments, has found its use in current-perpendicular-to-plane (CPP) magnetic devices over the past decade. Although extensive research on this subject has been conducted both experimentally and theoretically, the understanding of its effect and impact on the performance of actual magnetic devices with finite dimensions at nanometer scale are still far from complete. Innovations based on its utilization for novel devices application have also been rare.
520 $a This thesis presents a series of systematic micromagnetic studies focusing on the spin momentum transfer effect in various CPP devices at deep submicrometer and nanometer dimensions. The thesis contributes to the subject of spin momentum transfer in two particular aspects: the insightful understanding of its impact to CPP magnetoresistive devices and its innovative utilization in novel MRAM designs.
520 $a The thesis is organized as the following: Chapter 1 gives a general introduction on spin momentum transfer effect. In Chapter 2 of the thesis, the theoretical micromagnetic model and the numerical calculation methodology is presented. The work in Chapter 3, 4 and 5 is based on the micromagnetic modeling. In Chapter 3, current MRAM designs and challenges are reviewed. A new low power vertical ring shaped MRAM design and a new perpendicular MRAM are presented. The two new designs utilize both spin transfer torque and Ampere's field to switching memory states. They are free of write addressing disturbance and avoid the limit of the half selection problem in the conventional design. The magnetic performance as well as the scalability of memories is described in this chapter. Chapter 4 has investigated the magnetization oscillation excited by perpendicularly polarized spin transfer torque in CPP structure and designed its applications in microwave spin nano-oscillator and ferromagnetic resonance assisted recording. Chapter 5 studies the spin wave excitation in CPP sensors and proposed the 1/f noise observed in CPP read heads of hard disk drive is induced by spin transfer torque. Finally Chapter 6 provides a complete summary of the thesis.
590 $a School code: 0041.
650 4 $a Physics, Electricity and Magnetism. $3 1019535
690 $a 0607
710 2 $a Carnegie Mellon University. $3 1018096
773 0 $t Dissertation Abstracts International $g 68-06B.
790 $a 0041
791 $a Ph.D.
792 $a 2007
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3270861