magnetic memory Archives - FunsizePhysics

Writing the Magnetic Alphabet

sadenwalla12022-05-12T12:07:11-06:00

05/12

Laser memory

Writing the Magnetic Alphabet

by Shireen Adenwalla

Instead of pencil, paper, and eraser, we can use combinations of lasers and magnetic materials to write, read, and and erase information by varying the temperature and magnetic field. Here we apply our laser "pencil" to magnetic "paper" to write the letter “N” (Go Huskers!!). This technique allows us write, erase, and rewrite tiny magnetic memories like those found in your computer hard drive and other devices. Click to learn how it works!

#ferromagnetism #magnetic memory #magnetism #nanomagnetism #polarization

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Writing the Magnetic Alphabetsadenwalla12022-05-12T12:07:11-06:00

Imprinting Memory in Nanomagnets by Field Cooling

kchesnel2021-07-14T10:32:43-06:00

11/05

Nanomagnetism

Imprinting Memory in Nanomagnets by Field Cooling

by Karine Chesnel

You may know that the media used in magnetic recording technologies, such as computer hard drives, are made of millions of tiny nanomagnets. Each nanomagnet can be switched up or down to record bits of information as ones and zeros. These media are constantly subjected to magnetic fields in order to write, read, and erase information. If you have ever placed a magnet too close to your laptop or cell phone, you know that exposure to an external magnetic field can disrupt information stored this way. Did you know that it is possible for the nanomagnets to "remember" their previous state, if carefully manipulated under specific magnetic field and temperature conditions? Using a kind of memory called topological magnetic memory, scientists have found out how to imprint memory into magnetic thin films by cooling the material under the right conditions.

#electronics #ferromagnetism #magnetic memory #magnetism #nanomagnetism #thin films #x-rays

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Imprinting Memory in Nanomagnets by Field Coolingkchesnel2021-07-14T10:32:43-06:00

Straining for More Stable Memory

xhong22021-07-14T10:35:44-06:00

11/05

Magnetic anisotropy

Straining for More Stable Memory

by Xia Hong

Would you rather have data storage that is compact or reliable? Both, of course! Digital electronic devices like hard drives rely on magnetic memory to store data, encoding information as “0”s and “1”s that correspond to the direction of the magnetic moment, or spin, of atoms in individual bits of material. For magnetic memory to work, the magnetization should not change until the data is erased or rewritten. Unfortunately, some magnetic materials that are promising for high density storage have low data stability, which can be improved by squeezing or stretching the crystal structures of magnetic memory materials, enhancing a material property called magnetic anisotropy.

#crystals #electronics #magnetic memory #magnetism #spin

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Straining for More Stable Memoryxhong22021-07-14T10:35:44-06:00

Magnets, Gatorade, and the Quest for Energy-Efficient Computers

leighton2021-07-14T10:40:22-06:00

09/30

Computing with fool's gold?

Magnets, Gatorade, and the Quest for Energy-Efficient Computers

by Chris Leighton

Fool's gold is a beautiful mineral often mistaken for gold, but recent research shows that its scientific value may be great indeed. Using a liquid similar to Gatorade, it can be turned into a magnet at the flick of a switch! Read on to learn more!

#crystals #electricity #Electrons #ferromagnetism #magnetic memory #magnetism #minerals

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Magnets, Gatorade, and the Quest for Energy-Efficient Computersleighton2021-07-14T10:40:22-06:00

A Molecular Switch

GHao2021-07-14T10:41:34-06:00

08/10

Tiny magnets do big work

A Molecular Switch

by Guanhua (Tibbers) Hao, Peter Dowben

Think of the hard disk in your computer. Information is stored there in the form of magnetic "bits." But do you know how small a magnet can be? Some molecules make magnetic magic, and these special molecules may give rise to the ultrafast, high precision, low power devices of the future.

#electronics #Electrons #ferromagnetism #magnetic memory #magnetism #Molecules #semiconductors #spin #spintronics #x-rays

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A Molecular SwitchGHao2021-07-14T10:41:34-06:00

Spin cant? Spin CAN!

Aldo Raeliarijaona2021-07-14T10:46:48-06:00

01/25

Magnets with a twist

Spin cant? Spin CAN!

by Aldo Raeliarijaona, Alexey Kovalev

In most magnetic materials, the magnetic moments of individual atoms are aligned parallel to one another and point in the same direction. In special structures called skyrmions and antiskyrmions, however, they are arranged in a spiraling pattern. Their stability and compact size makes skyrmions and antiskyrmions especially useful for encoding lots of data in a small space. But a few questions need to be answered before skyrmion-based technology can be used in your iPhone or other memory devices. First, why do these magnetic structures form in some materials and not others? How can we design a system where they will form? And how can we generate these structures on demand? Click to find out!

#atoms #magnetic memory #magnetism #memory #quantum mechanics #spin #thin films

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Spin cant? Spin CAN!Aldo Raeliarijaona2021-07-14T10:46:48-06:00

Spins and Skyrmions

akovalev22021-07-14T10:47:33-06:00

07/03

Magnetic patterns

Spins and Skyrmions

by Alexey Kovalev

Recent progress in materials science has led to the creation of new magnetic materials in which the magnetism follows complex patterns. The formation of these patterns depends on a phenomenon called spin-orbital coupling. Because they can be manipulated by electric currents and temperature changes, materials exhibiting these interesting magnetic patterns may have applications in magnetic memories and logic devices. Click to learn how!

#magnetic memory #magnetism #spin #spintronics

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Spins and Skyrmionsakovalev22021-07-14T10:47:33-06:00

Molecular Light Switch

funsizephysics2021-07-14T11:06:49-06:00

02/23

Just add water

Molecular Light Switch

by Funsize Physics

A bit of stray moisture during an experiment tipped off scientists about the strange behavior of a complex oxide material they were studying—shedding light on its potential for improving chemical sensors, computing and information storage. In the presence of a water molecule on its surface, the layered material emits ultraviolet light from its interior.

#crystals #magnetic memory #optics #oxides #photoemission #thin films

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Molecular Light Switchfunsizephysics2021-07-14T11:06:49-06:00