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Home Science

Magnetic graphene switches between insulator and conductor

Wilbert Doyle by Wilbert Doyle
February 2, 2025

Researchers have found that positive, extremely thin magnetic materials can transfer from insulator to conductor under high strain, a phenomenon that could be used to improve next-generation electronics and memory storage gadgets.

The global team of researchers, led by the University of Cambridge, say that their results, published in the journal Physical Review Letters, will usefully resource in expertise the dynamic courting among the electronic and structural residences of the fabric, now and then referred to as magnetic graphene, and may constitute a brand new way to supply three-dimensional materials.

Magnetic graphene, or iron trithiohypophosphate (FePS3), is from a circle of relatives of van der Waals substances and became first synthesized within the Sixties. Researchers have begun searching at FePS3 with fresh eyes in the past decade. Like graphene, a -dimensional form of carbon, FePS3 may be exfoliated into ultra-thin layers. Unlike graphene, FePS3 is magnetic.

conductor

The expression for electrons’ intrinsic supply of magnetism is called spin. Spin makes electrons behave a piece like tiny bar magnets and factor in a certain manner. Magnetism from the association of electron spins is used in maximum reminiscence gadgets. It is important for growing new technologies and spintronics that can transform how computer systems method statistics.

Despite graphene’s brilliant power and conductivity, its inability to always be magnetic limits its software in areas including magnetic garage and spintronics. Researchers have been attempting to find magnetic substances that can be integrated with graphene-based total devices.

For their examination, the Cambridge researchers squashed layers of FePS3 collectively below high pressure (approximately 10 Gigapascals); they observed that it switched between an insulator and conductor, a phenomenon called a Mott transition. Converting the pressure can also help tune the conductivity.

These materials are characterized by weak mechanical forces among the planes in their crystal structure. Under pressure, the aircraft are pressed together steadily and controllably, pushing the machine from 3 to 2 dimensions and from an insulator to steel.

The researchers also determined that the fabric retained its magnetism even in dimensions. “Magnetism in dimensions is nearly in opposition to the laws of physics because of the destabilizing effect of fluctuations; however, in this cloth, it seems to be real,” said Dr. Sebastian Haines, the paper’s first writer from Cambridge’s Department of Earth Sciences and Department of Physics.

The materials are less expensive, non-toxic, and clean to synthesize, and with similar studies, could be included in graphene-primarily based devices.

“We are persevering to look at these materials so you can construct stable theoretical information about their homes,” said Haines. “This know-how will finally underpin the engineering of gadgets. However, we want the right experimental clues that give the theory an amazing starting line. Our paintings point to a thrilling direction for producing two-dimensional substances with tuneable and conjoined electric, magnetic, and electronic properties.”

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Wilbert Doyle

Wilbert Doyle

I am a technology freak, I love new technologies and gadgets. I am always ready to learn new things, so I can share this knowledge with other people. and I am really happy when people like my blogs.

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