Giant magnetoresistance (GMR) is a quantum mechanical magnetoresistance effect observed in multilayers composed of alternating ferromagnetic and non-magnetic conductive layers. The 2007 Nobel Prize in Physics was awarded to Albert Fert and Peter Grünberg for the discovery of GMR, which also sets the foundation for the study of spintronics.

Allegro MicroSystems, LLC 是开发、制造和销售高性能 集成电路 (IC) 的世界领先企业，其 IC 集成了高性能磁性传感器。 本白皮书概述了巨磁电阻 (GMR) 效应的基本内容，以及 Allegro 如何在市场领先的 IC 中使用此技术来满足当今的应用需求。 1988年，UnitéMixte de Physique CNRS/Thales 的 Albert Fert 和 Institut für Festkörperforschung Forschungszentrum Jülich GmbH 的 PeterGrünberg 发现了 GMR 效应。 两人凭借此发现获得 2007 年诺贝尔奖。 GMR 效应的 …

gmr磁场传感器即巨磁阻（gmr=giant magneto resistive）磁场传感器。 它是一个集磁性薄膜，半导体集成及纳米技术为一体的高新技术产品，应用非常广泛。 其技术结构套用一个数学公式：gmr传感器=磁性材料+纳米技术+半导体集成。

Many vendors selling GMR solutions do so using a multi-chip approach: a “sensor” chip and an “interface” chip. Allegro is one of very few IC manufacturers who directly integrate GMR technology

2017年12月19日 · TMR （Tunnel Magneto Resistance）元件是近年来新型磁电阻效应传感器，其利用的是磁性多层膜材料的隧道磁电阻效应对磁场进行感应，比之前所发现并实际应用的AMR元件和GMR元件具有更大的电阻变化率。 我们通常也用磁隧道结（Magnetic Tunnel Junction，MTJ）来代指TMR元件，MTJ元件相对于霍尔元件具有更好的温度稳定性，更高的灵敏度，更低的功耗，更好的线性度，不需要额外的聚磁环结构；相对于AMR元件具有更好的温 …

Giant magnetoresistance (GMR) sensors produce a large change in resistance when the devices are subjected to a magnetic field. NVE Corporation is a leading provider of giant magnetoresistance (GMR) magnetic sensors.

2019年6月26日 · Allegro’s new integrated giant magnetoresistance (GMR) effect technology provides an additional tool in the designer’s toolbox to address new applications and to extend the capabilities of their ICs in existing applications.

The sensors of the GLM family are fixed pitch sensors based on the Giant MagnetoResistive (GMR) effect. The sensors were specially developed for use on ferromagnetic tooth structures. Therefore, a magnet is integrated into each sensor to stimulate the tooth structure.

NVE GMR sensors are designed to measure or sense magnetic field strength over a wide range of fields. GMR sensors directly detect magnetic field rather than the rate of change in magnetic field; therefore, they are useful as DC field sensors. NVE’s GMR sensors are sensitive to small changes in magnetic fields.

2009年9月15日 · Behind the utilization of GMR structures as read heads for massive storage magnetic hard disks, important applications as solid state magnetic sensors have emerged. Low cost, compatibility with standard CMOS technologies and high sensitivity are common advantages of these sensors.