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A spin-torque oscillator, an electronic apparatus including the same and a method for manufacturing the same

一种自旋扭矩振荡、自由的技术，应用在功率振荡器、电磁设备的零部件、磁场控制的电阻器等方向，能够解决高电流需求、输出功率低、调整频率困难等问题

Active Publication Date: 2017-08-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, comparative spin-torque oscillators (such as those described above) present a number of challenges, including the requirement that the externally applied magnetic field be large (e.g., on the order of 1,000-10,000 Oe), and tuning the frequency can be difficult , since doing so requires changing the externally applied magnetic field
Furthermore, the output power is typically very low (eg, on the order of 1-10 nW), and comparable oscillators have high current requirements (eg, on the order of several mA)

Method used

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  • A spin-torque oscillator, an electronic apparatus including the same and a method for manufacturing the same
  • A spin-torque oscillator, an electronic apparatus including the same and a method for manufacturing the same
  • A spin-torque oscillator, an electronic apparatus including the same and a method for manufacturing the same

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Embodiment Construction

[0049] Hereinafter, example embodiments will be described in more detail with reference to the accompanying drawings, wherein like reference numerals refer to like elements throughout. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided as examples so that this disclosure will be thorough and complete, and will fully convey the aspects and features of the invention to those skilled in the art. Therefore, processes, elements and techniques not necessary for one of ordinary skill in the art may not be described for a complete understanding of the aspects and features of the present invention. Unless otherwise stated, the same reference numerals denote the same elements throughout the drawings and the written description, and thus descriptions thereof will not be repeated. In the drawings, the relative sizes of elements, layers, and regions may be exagg...

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Abstract

The invention provides a spin-torque oscillator, an electronic apparatus including the same and a method for manufacturing the same. The spin-torque oscillator includes: a driving reference layer having a fixed magnetization; a nonmagnetic spacer layer; and a free layer having a changeable magnetization exhibiting an easy-cone magnetic anisotropy, the nonmagnetic spacer layer being between the driving reference layer and the free layer, a magnetic anisotropy energy of the free layer having a local maximum along an axis, a local minimum at an angle from the axis, and a global maximum different from the local maximum, the angle being greater than zero degrees, wherein the spin-torque oscillator is configured such that the changeable magnetization of the free layer precesses around the axis.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to and benefit of U.S. Provisional Patent Application No. 62 / 257,684 filed in the United States Patent and Trademark Office on November 19, 2015, the entire disclosure of which is incorporated herein by reference. technical field [0003] Aspects of embodiments of the invention relate to devices using spin-torque (moment) oscillators or spin-transfer (transition, transmission) oscillators. Background technique [0004] Spin-torque oscillators (also known as spin-transfer oscillators or spin-transfer nano-oscillators) are magnetic multilayer devices that typically include two conducting magnetic layers: a reference layer (or pinned layer or polarizer layer), and a free layer with a magnetization (magnetization) that freely rotates (eg, vortex precession or skyrmion precession) in response to current-generated spin torque ( e.g. an isotropic free layer). [0005] For example, figure 1 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B15/00H01L43/02H10N50/10H10N50/80
CPCH03B15/006H10N50/80H10N50/85H01F10/3254H01F10/3268H01L29/82G11C11/16H10N50/10
Inventor D.阿帕尔科夫R.彻普尔斯凯V.尼基丁
Owner SAMSUNG ELECTRONICS CO LTD