Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

A researcher of UPV/EHU has designed nanomagnets for industry

13.02.2008
The PhD, defended by chemist Sonia Moralejo García at the University of the Basque Country (UPV/EHU), achieved a well-defined line for the manufacture of nanomagnets and other magnetic devices of wide industrial application.

It is well known that current technology tends to design tools that are ever smaller and that nanotechnology, although it its infancy, is a theme that is very much in fashion in our society. Who has not heard of nanotubes, nanoparticles and nanomagnets, etc?

The PhD thesis by Ms Sonia Moralejo García, defended at the Faculty of Science and Technology at the University of the Basque Country (UPV/EHU), used various techniques to analyse the manufacture of nanomagnets and magnetic devices of widespread industrial application.

The PhD entitled, "Nanofabricación y propiedades magnéticas de nanoimanes patronados de películas delgadas "(The nanomanufacture and magnetic properties of nanomagnets patterned with thin films) was led by Professor Fernando Castaño Almendral and doctor Fernando Castaño Sánchez, and obtained excellent cum laude. The researcher has had the advantage of a number of study-stays in various laboratories: the Max Planck Institute of Microstructure Physics in Germany and the Cavendish Laboratory of the University of Cambridge in the United Kingdom which contributed to completing her PhD thesis.

Sonia Moralejo García is a graduate in Chemical Sciences from the University of the Basque Country and currently continues to do her research at the Department of Chemical Sciences at the university.

Data storage

This work in the field of nanotechnology combines two multidisciplinary experimental worlds, the technological and the scientific. The technological is related to the manufacture of nanomagnets and magnetic devices, for which a complete series of techniques have been developed and/or made ready and which enable, from start to finish, the obtaining of samples by conventional methods and of wide industrial application. “Amongst other things, we have created a system for growing a number of materials at the same time, instead of just one at a time” said the researcher. In this PhD, two materials have been mainly employed: Ni-Fe and Co-Fe alloys.

Their magnetic behaviour has been studied, both as continuous layers and as samples of smaller size (threads, circles, ellipses), varying their shape and distances, given that they have different behaviour patterns – knowing these is essential for the different applications.

The magnetic behaviour of these materials was studied using hysteresis. Such magnetic behaviour enables the storage of computer hard discs in magnets: the magnetic field induces a magnetising of the small magnet – codified in a binary manner as either 0 or 1 -; this codification remains in the absence of the magnetic field and can be read subsequently, but it can also be inverted, applying a magnetic field in the opposite sense.

As we have mentioned, the main applications of this type of nanomagnets and magnetic devices are focused on the field of storage and data treatment, hard discs, etc.

The manufacture of nanomagnets and magnetic devices at a small scale has enabled having samples available and tackle problems of great current interest in the field of nanomagnetism.

Although the beginning of this thesis was somewhat difficult, given that what was involved was a new line of research for the Department of Physical Chemistry at the UPV/EHU, forthwith they will try to design and install new techniques and carry out trials on a wider range of materials.

Irati Kortabitarte | alfa
Further information:
http://www.basqueresearch.com/berria_irakurri.asp?Berri_Kod=1630&hizk=I

More articles from Physics and Astronomy:

nachricht ALMA discovers aluminum around young star
17.05.2019 | National Institutes of Natural Sciences

nachricht JQI researchers shed new light on atomic 'wave function'
17.05.2019 | National Institute of Standards and Technology (NIST)

All articles from Physics and Astronomy >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Self-repairing batteries

UTokyo engineers develop a way to create high-capacity long-life batteries

Engineers at the University of Tokyo continually pioneer new ways to improve battery technology. Professor Atsuo Yamada and his team recently developed a...

Im Focus: Quantum Cloud Computing with Self-Check

With a quantum coprocessor in the cloud, physicists from Innsbruck, Austria, open the door to the simulation of previously unsolvable problems in chemistry, materials research or high-energy physics. The research groups led by Rainer Blatt and Peter Zoller report in the journal Nature how they simulated particle physics phenomena on 20 quantum bits and how the quantum simulator self-verified the result for the first time.

Many scientists are currently working on investigating how quantum advantage can be exploited on hardware already available today. Three years ago, physicists...

Im Focus: Accelerating quantum technologies with materials processing at the atomic scale

'Quantum technologies' utilise the unique phenomena of quantum superposition and entanglement to encode and process information, with potentially profound benefits to a wide range of information technologies from communications to sensing and computing.

However a major challenge in developing these technologies is that the quantum phenomena are very fragile, and only a handful of physical systems have been...

Im Focus: A step towards probabilistic computing

Working group led by physicist Professor Ulrich Nowak at the University of Konstanz, in collaboration with a team of physicists from Johannes Gutenberg University Mainz, demonstrates how skyrmions can be used for the computer concepts of the future

When it comes to performing a calculation destined to arrive at an exact result, humans are hopelessly inferior to the computer. In other areas, humans are...

Im Focus: Recording embryonic development

Scientists develop a molecular recording tool that enables in vivo lineage tracing of embryonic cells

The beginning of new life starts with a fascinating process: A single cell gives rise to progenitor cells that eventually differentiate into the three germ...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

SEMANTiCS 2019 brings together industry leaders and data scientists in Karlsruhe

29.04.2019 | Event News

Revered mathematicians and computer scientists converge with 200 young researchers in Heidelberg!

17.04.2019 | Event News

First dust conference in the Central Asian part of the earth’s dust belt

15.04.2019 | Event News

 
Latest News

Discovering unusual structures from exception using big data and machine learning techniques

17.05.2019 | Materials Sciences

ALMA discovers aluminum around young star

17.05.2019 | Physics and Astronomy

A new iron-based superconductor stabilized by inter-block charger transfer

17.05.2019 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>