Molecular Memory Can Be Used to Increase the Memory Capacity of Hard Disks

Single- particle magnets are particles capable of keeping in mind the instructions of an electromagnetic field that has actually been used to them over reasonably extended periods of time when the electromagnetic field is turned off. Thus, one can “write” info into particles. Single- particle magnets have prospective applications, for instance, as high-density digital storage media and as parts of microprocessors in quantum computer systems. Practical applications have, nevertheless, been considerably prevented by the reality that single-molecule magnets are functional just at very low temperature levels. Their intrinsic memory residential or commercial properties typically disappear if they are heated up more than a couple of degrees above outright absolutely no (–273 ° C); for that reason, single-molecule magnets can be just studied under lab conditions by cooling them with liquid helium.

More beneficial conditions for technological applications

Researchers have now, for the very first time, handled to manufacture and identify a single-molecule magnet which maintains its memory residential or commercial properties above the temperature level of liquid helium (–196 ° C). The magnet can be called the very first high-temperature single-molecule magnet.

— When considering our daily life, liquid nitrogen is very cold. However, compared to liquid helium, which has actually up until now been needed to research study single-molecule magnets, the liquid nitrogen temperature level is a big leap upwards. Liquid nitrogen is more than 300 times more affordable than liquid helium and a lot more easily offered, making it possible for technological applications. Therefore, the research study makes up a crucial clinical turning point, explains postdoctoral scientist AkseliMansikkam äki from the Department of Chemistry of the University of Jyv äskylä.

New insights from calculations

The brand-new dysprosium metallocene substance is the conclusion of numerous years of research study. The task has actually needed the advancement of brand-new methods in organometallic lanthanide chemistry and deep insights of the relationship in between the tiny electronic structure and magnetic residential or commercial properties of the studied systems.

— Computational approaches based upon quantum mechanics and the theory of relativity play a crucial function in the characterization and style of brand-new single-molecule magnets. The big computational resources offered today have actually made it possible for, for instance, to clarify the interaction in between crystal vibrations and the electronic structure of particles studied in the present work, Mansikkam äki discusses.

The research study likewise offers brand-new insights and standards how to even more enhance the magnetic residential or commercial properties of single-molecule magnets and how to bring technological applications better to reality.

The research study task has actually been led by teacher RichardLayfield at the University of Sussex, UK. The artificial work and characterization of the ready substances was performed at Layfield’s research study group and magnetic measurements were carried out at Sun Yat- sen University, Guangzhou, PRC under the management of teacher Ming-LiangTong Postdoctoral scientist AkseliMansikkam äki performed theoretical estimations and analyses at the Department of Chemistry of the University of Jyv äskylä. In Finland, the research study has actually been funded by the Academy ofFinland Computational resources were offered by the CSC-IT Center for Science and the University of Jyv äskylä.

The work has actually been released in the extremely appreciated journal Science on 18.102018

Source: Universityof Jyv äskylä

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