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14 June 2013
Science

Postgraduate student of ISTU, Alina Zhuravleva, studied the properties of new materials on the training in Hong Kong

In early June, postgraduate student of the subdepartmnet of Quantum physics and nano-materials at Institute of Physics and Technics at ISTU, Alina Zhuravleva, returned to Irkutsk from Hong Kong University of Science and Technology (HKUST) - one of the leading universities in Asia – where she had her internship. A. Zhuravleva is one of four winners of the scholarship program RUSAL-HKUST. Since 2011, Mikhail Kuz’min, Alexander Ugap’ev, and Egor Steyner became the laureates of the program.

A. Zhuravleva was engaged in research in the framework of the thesis devoted to the study of electrical and magnetic properties of heterostructures within four months (February-May). Postgraduate student had the opportunity to use the lab and the scientific basis of three universities: HKUST, HKU (The University of Hong Kong) and CityU (City University of Hong Kong). A. Zhuravleva conducted experiments and studied semiconductor materials under the guidance of an international team of scientists Rolf Lords, Antonio Ruatolo and Francis Link.

"I worked in the laboratories of spintronics, material science and superconductivity; I synthesized semiconductor structures by PLD (Pulsed Laser Deposition) method. I also consulted about the superconducting structures, which I have been studying for four years in the laboratory of superconductivity at ISTU under the direction of the chief of the department of synthesis of nanostructures, Alexander Schneider,” says A. Zhuravleva. “Most of the experimental work was focused on the synthesis and study of magnetic and optical properties of high quality thin films of zinc oxide doped with manganese and lithium of different concentrations. Interestingly, when we are doping these elements into the semiconductor film, the material may have unique properties such as ferromagnetism at room temperature. It is commonly known that semiconductor technology based on silicon structures can reach the limit of their capabilities in the next few decades; first of all it concerns the systems' performance. So it is necessary to look for new principles that will create cheaper high-speed devices with low power consumption and heat dissipation. In my opinion, zinc oxide may replace silicon and satisfy all the requirements of spintronics. "

According to A. Zhuravleva experimentally studied semiconductor structures can be used in instrument engineering, in the creation of liquid crystal displays and quantum computer. She explains that spintronics (spin electronics - electronics of spin transport) is a new scientific field, allowing to control the electromagnetic fields and change the properties of materials. At the moment, it is already established the laboratory of spintronic devices such as spin transistor and a memory module based on MRAM. Spintronics is a promising and rapidly developing science that is built on the basis of various fields of knowledge, including physics and chemistry.

"I have studied superconducting structures for years. However, I decided to expand the scope of my knowledge during this internship and focused on semiconductor structures. We have almost always achieved the necessary results because we used high-quality substrates making coating produced by one of the most modern methods of synthesis, during which we could change modes (temperature, pressure, velocity) in the system, thereby adjusting the thickness and properties of our films. The resulting films I brought to Russia for further study at our university, " adds A. Zhuravleva.

Postraduate student calls the scientific environment in Hong Kong as "very open". She notices that it can attend scientific lectures, forums and conferences with the participation of scientists from around the world with whom you can talk to, and get a chance to join a research team under the leadership of their work on an interesting project almost every week in the HKUST. In addition, an important scientific value represents the university library collection with a few tutorials and access to various databases.

A. Zhuravleva reported that she will continue her work in Irkutsk Technical University in collaboration with experts from Hong Kong. She plans to combine superconductivity and spintronics in one study.

REFERENCE:
The Scholarship Program RUSAL-HKUST provides an opportunity for students and postgraduates of Russian universities to undergo training at Hong Kong University of Science and Technology, to meet the higher education system of Hong Kong, share knowledge and experience with Hong Kong colleagues, and to conduct joint research on a wide range of scientific questions. According to organizers, grant support per student is $ 16,930, which includes tuition fees, the cost of airfare, accommodation on campus, insurance and other expenses. RUSAL covers the cost of airfare, accommodation in the campus of HKUST, execution of documents (visa, etc.) and pays a monthly schollarship to postgraduate students during their stay at HKUST.

Irina Afanas’eva



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