About us

Vopson research is a blog associated with Dr Vopson's Physics research activities at the University of Portsmouth, School of Mathematics and Physics, Faculty of Technology.

Applied Materials nano-Thin Films Laboratory becomes fully functional

The nano-thin films teaching laboratory within the Applied Materials Laboratory at the University of Portsmouth becomes fully operational. This is a major teaching facility that will deliver at least 2-3 student projects per year, as well as PhD and MSc/Mres research work.


Thin films deposition via plasma magnetron sputtering



LabLine Kurt J. Lesker Plasma Sputtering System
5 magnetron targets, 4 DC and one RF
One magnetron target for magnetic materials
4 substrates holder with automated indexing for
deposition of individual or multi-layers
Substrates heater up to 450 C
2 Quartz thickness rate monitors (resolution 0.1 A/s)

Applications of multiferroic materials review published

Fundamentals of Multiferroic Materials and Their Possible Applications
Melvin M. Vopson (2015): Fundamentals of Multiferroic Materials and Their Possible Applications, Critical
Reviews in Solid State and Materials Sciences, DOI: 10.1080/10408436.2014.992584

This article is the basis of the Introduction to Multiferroic materials and their Application teaching Unit offered by Dr Vopson to University of Portsmouth Applied Physics students at Level 6 / year 3. Most of the teaching material is now published in this major review article.  

Abstract
Materials science is recognized as one of the main factors driving development and economic growth. Since the silicon industrial revolution of the 1950s, research and developments in materials and solid state science have radically impacted and transformed our society by enabling the emergence of the computer technologies, wireless communications, Internet, digital data storage, and widespread consumer electronics. Today’s emergent topics in solid state physics, such as nano-materials, graphene and carbon nano-tubes, smart and advanced functional materials, spintronic materials, bio-materials, and multiferroic materials, promise to deliver a new wave of technological advances and economic impact, comparable to the silicon industrial revolution of the 1950s. The surge of interest in multiferroic materials over the past 15 years has been driven by their fascinating physical properties and huge potential for technological applications. This article addresses some of the undamental aspects of solid-state multiferroic materials, followed by the detailed presentation of the latest and most interesting proposed applications of these multifunctional solid-state compounds. The applications presented here are critically discussed in the context of the state-of-the-art and current scientific challenges. They are highly interdisciplinary covering a wide range of topics and technologies including sensors, microwave devices, energy harvesting, photo-voltaic technologies, solid-state refrigeration, data storage recording technologies, and random access multi-state memories. According to their potential and expected impact, it is estimated that multiferroic technologies could soon reach multibillion US dollar market value.
To link to this article: http://dx.doi.org/10.1080/10408436.2014.992584