Interface induced magnetic properties of thin films
薄膜的界面感应磁特性
基本信息
- 批准号:RGPIN-2019-07203
- 负责人:
- 金额:$ 2.99万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2020
- 资助国家:加拿大
- 起止时间:2020-01-01 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The rapid increase in magnetic memory storage density over the last three decades has been made possible by the discovery of interface-induced phenomena in ferromagnetic (FM)|non-magnetic (NM) multilayers. The discovery of giant magnetoresistance and tunnel magnetoresistance phenomena enabled the detection of magnetic moment direction and are key for the design of magnetic sensors that are responsible for >100 times increase in the recording density of hard drives. The observation of spin transfer torque (STT) and spin orbit torque, utilized to manipulate the magnetic moment direction, allows for a novel design of solid state non-volatile magnetic memories, which are identified as the next generation in memory devices.
Another interface effect that has been intensively studied is the interlayer exchange coupling. This phenomenon has not been used to its full potential until now, since traditional coupling layers only allow for collinear orientation of magnetic moments of FM layers. Recently, we discovered and patented new coupling layer (CL) materials, which can be inserted instead of NM, between two ferromagnetic layers to precisely control the relative orientation of the magnetic moments of FM layers in FM|CL|FM. These new coupling layers have the potential to be used in the majority of magnetic nanodevices since the optimal design of magnetic nanodevices almost always requires non-collinear alignment between at least two neighboring ferromagnetic layers.
This proposal focuses on understanding the origin of non-collinear coupling in FM|CL|FM structures and how to incorporate these structures into magnetic nanodevices. The emphasis will be on devices, which could benefit most from non-collinear alignment of magnetic moments, spin transfer torque magnetic random-access memories (STT MRAM), and nano-oscillators. STT MRAM with non-collinear alignment of magnetic moments are expected to have much faster write speeds and significantly low power consumption than the current state-of-the-art STT MRAM devices. Canada will benefit from significant intellectual property that has already been and will be generated, which could create an opportunity for HQP to develop these nanodevices in Canada.
In addition to studying static effects, such as interlayer coupling, we will also study magnetization dynamic effects, spin pumping at FM|NM interfaces, and the subsequent transport of pure spin current in NM. Of specific interest are NM = Pt and Pd since they exhibit proximity magnetization when interfaced with ferromagnetic films. Pt and Pd also strongly affect magnetic static and dynamic properties of ferromagnetic layers, which can be beneficial like increase of surface anisotropy or detrimental like increase of magnetic damping. We will study the mechanisms responsible for increase of damping of ferromagnetic layers adjacent to Pt and Pd by means of spin pumping and inverse spin Hall effect.
在过去的三十年中,由于在铁磁(FM)|非磁(NM)多层材料中发现了界面诱导现象,使得磁存储密度的快速增长成为可能。巨磁阻和隧道磁阻现象的发现使磁矩方向的检测成为可能,是磁传感器设计的关键,使硬盘的记录密度提高了100倍。利用自旋传递转矩(STT)和自旋轨道转矩来控制磁矩方向,可以设计一种新的固态非易失性磁存储器,被认为是下一代存储器件。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Girt, Erol其他文献
Magnetic properties of Co/Ni multilayer structures for use in STT-RAM
- DOI:
10.1088/1361-6463/aa97fa - 发表时间:
2017-12-20 - 期刊:
- 影响因子:3.4
- 作者:
Arora, M.;Lee-Hone, N. R.;Girt, Erol - 通讯作者:
Girt, Erol
Spin transport in tantalum studied using magnetic single and double layers
- DOI:
10.1103/physrevb.94.054416 - 发表时间:
2016-08-12 - 期刊:
- 影响因子:3.7
- 作者:
Montoya, Eric;Omelchenko, Pavlo;Girt, Erol - 通讯作者:
Girt, Erol
Measurements of interlayer exchange coupling of Pt in Py|pt|Py system
- DOI:
10.1063/1.5050935 - 发表时间:
2018-10-01 - 期刊:
- 影响因子:4
- 作者:
Omelchenko, Pavlo;Heinrich, Bret;Girt, Erol - 通讯作者:
Girt, Erol
Spin Torque Switching in Nanopillars With Antiferromagnetic Reference Layer
- DOI:
10.1109/lmag.2016.2617319 - 发表时间:
2017-01-01 - 期刊:
- 影响因子:1.2
- 作者:
Arora, Monika;Fowley, Ciaran;Girt, Erol - 通讯作者:
Girt, Erol
Quantum Well State Induced Oscillation of Pure Spin Currents in Fe/Au/Pd(001) Systems
- DOI:
10.1103/physrevlett.113.136601 - 发表时间:
2014-09-24 - 期刊:
- 影响因子:8.6
- 作者:
Montoya, Eric;Heinrich, Bret;Girt, Erol - 通讯作者:
Girt, Erol
Girt, Erol的其他文献
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{{ truncateString('Girt, Erol', 18)}}的其他基金
Interface induced magnetic properties of thin films
薄膜的界面感应磁特性
- 批准号:
RGPIN-2019-07203 - 财政年份:2022
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Novel designs of Spin Torque Transfer Magnetic Random Access Memory (STT-MRAM) devices
自旋转矩传递磁性随机存取存储器(STT-MRAM)器件的新颖设计
- 批准号:
561528-2021 - 财政年份:2021
- 资助金额:
$ 2.99万 - 项目类别:
Idea to Innovation
Interface induced magnetic properties of thin films
薄膜的界面感应磁特性
- 批准号:
RGPIN-2019-07203 - 财政年份:2021
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
New sputter deposition capabilities for growth of metal-oxide multilayers
用于金属氧化物多层生长的新溅射沉积能力
- 批准号:
RTI-2022-00673 - 财政年份:2021
- 资助金额:
$ 2.99万 - 项目类别:
Research Tools and Instruments
Interface induced magnetic properties of thin films
薄膜的界面感应磁特性
- 批准号:
RGPIN-2019-07203 - 财政年份:2019
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Novel nanomagnetic structures, materials and devices
新型纳米磁性结构、材料和器件
- 批准号:
RGPIN-2014-05675 - 财政年份:2018
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Novel nanomagnetic structures, materials and devices
新型纳米磁性结构、材料和器件
- 批准号:
RGPIN-2014-05675 - 财政年份:2017
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Novel nanomagnetic structures, materials and devices
新型纳米磁性结构、材料和器件
- 批准号:
RGPIN-2014-05675 - 财政年份:2016
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Novel nanomagnetic structures, materials and devices
新型纳米磁性结构、材料和器件
- 批准号:
RGPIN-2014-05675 - 财政年份:2015
- 资助金额:
$ 2.99万 - 项目类别:
Discovery Grants Program - Individual
Canada Research Chair in Novel Magnetic Materials
加拿大新型磁性材料研究主席
- 批准号:
1000210582-2008 - 财政年份:2014
- 资助金额:
$ 2.99万 - 项目类别:
Canada Research Chairs
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