USA As Represented by Secretary of the Navy

Steven P Bennett

Olaf M J Van 't Erve

Adam L Friedman

Jeffrey W Baldwin

Cory D Cress

Peter Finkel

Bernard R Matis

Ronald Lacomb

Margo Staruch

Konrad Bussmann

Joseph C Prestigiacomo

Julie Lacomb

William Zappone

Meredith Metzler

Norman Gottron

Also disclosed herein is an article having a substrate and a layer of an FeRh alloy disposed on the substrate. The alloy has a continuous antiferromagnetic phase and one or more discrete phases smaller in area than the continuous phase having a lower metamagnetic transition temperature than the continuous phase. Also disclosed herein is a method of: providing an article having a substrate and a layer having a continuous phase of an antiferromagnetic FeRh alloy disposed on the substrate and directing an ion source at one or more portions of the alloy to create one or more discrete phases having a lower metamagnetic transition temperature than the continuous phase.

Pattern writing of magnetic order using ion irradiation of a magnetic phase transitional thin film

A metamagnetic tunneling-based spin valve device for multistate magnetic memory comprising an electronic memory logic element with four stable resistance states. A metamagnetic tunneling-based spin valve device for multistate magnetic memory comprising a layer of a metamagnetic material, a layer of a nonmagnetic material on the layer of a metamagnetic material, and a layer of a ferromagnetic material on the layer of a nonmagnetic material. A method of making a metamagnetic tunneling-based spin valve device for multistate magnetic memory.

Multistate magnetic memory element using metamagnetic materials

A high-sensitivity and ultra-low power consumption magnetic sensor using a magnetoelectric (ME) composite comprising of magnetostrictive and piezoelectric layers. This sensor exploits the magnetically driven resonance shift of a free-standing magnetoelectric micro-beam resonator. Also disclosed is the related method for making the magnetic sensor.

Ultra-low power magnetoelectric magnetic field sensor

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Alexandria, VA, United States of America

Steven P Bennett