Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

FEFU scientists have created a new type of optical ceramic material

07.06.2018

Multilayer YAG/Nd3+:YAG/YAG composite laser ceramics with a high concentration of active additive outclassed the commercial glass and single crystals used in laser technologies by it's physical and mechanical characteristics. The slope efficiency of the new one is at least twice as the existed materials have got.

The new type of optical ceramics was designed by young scientists' team of the Far Eastern Federal University (FEFU) under Denis Yu. Kosyanov, Ph.D., senior researcher of the School of Natural Sciences (FEFU). The scientific and technical results of the work presented for publishing in the Ceramics International. Patent application was filed to RosPatent (reg.number 2018119380).


This is a monophase polycrystal with an average grain size of 500 nm obtained by FEFU scientists, Russia. Because of the innovative method of reaction spark plasma sintering (RSPS) the synthesis carried out 10-20 times faster comparing to the known approaches.

Credit: FEFU laboratory Materials

Ceramics created is one of the numbers of other results of the work to design transparent polycrystalline materials with specified properties. The results of previous research have already been published in high-ranking scientific journals Journal of Alloys and Compounds, Journal of the European Ceramic Society, Ceramics International, Optical Materials, etc.

'The new so-called 'fine-grained' ceramics YAG: Nd contains up to 4 at.% active additive of neodymium ions. So far, that is unattainable with modern technologies of laser crystals production. The applying of the innovative method of reaction spark plasma sintering (RSPS) made it possible to carry out the synthesis 10-20 times faster comparing to the known approaches, and to obtain a monophase polycrystal with an average grain size of 500 nm', senior researcher Denis Kasyanov comments on.

'An important result of the invention is the simplification and cost reduction of the technology of obtaining optical materials with a YAG structure. In particular, the easiness of controlling the variety and the amount of active additive within the RSPS method makes it possible to vary the functionality of the final material', he proceeds.

The research was carried out as a part of the project of the Ministry of Education and Science of the Russian Federation (Project No. 3.2168.2017/4.6), and to increase the competitiveness of the FEFU which became one of the fourteen Russian Universities participating in the project '5-100' since 2014.

The researching direction of the team led by Denis Kosyanov is considering as promising. There are a number of problems established in front of scientists to further research. To gain success in solving them FEFU designed the curriculum for magistracy, postgraduate, and postdoctoral studies.

The 'New ceramic materials' is one of the main researching areas in the key laboratory 'Materials' established by FEFU. To ensure a breakthrough, we are already attracting Russian and foreign scientists from leading Universities and research organizations', Kirill Golokhvast tells, Ph.D., FEFU provost for science work. He also noticed that the team of the key laboratory will be formed of talented young physicists, biologists, and, of course, materials scientists.

Keywords: Nd3+ :YAG, pressing, reaction spark plasma sintering, microstructure, optical properties, lasers

Media Contact

Maria Lukina
lukina.ms@dvfu.ru
7-968-792-0041

http://https://www.dvfu.ru/en/ 

Maria Lukina | EurekAlert!

Further reports about: ceramic material ceramic materials ions neodymium optical materials

More articles from Materials Sciences:

nachricht Crystal with a twist: Scientists grow spiraling new material
21.06.2019 | University of California - Berkeley

nachricht A new manufacturing process for aluminum alloys
19.06.2019 | DOE/Pacific Northwest National Laboratory

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

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

Im Focus: Fraunhofer IDMT demonstrates its method for acoustic quality inspection at »Sensor+Test 2019« in Nürnberg

From June 25th to 27th 2019, the Fraunhofer Institute for Digital Media Technology IDMT in Ilmenau (Germany) will be presenting a new solution for acoustic quality inspection allowing contact-free, non-destructive testing of manufactured parts and components. The method which has reached Technology Readiness Level 6 already, is currently being successfully tested in practical use together with a number of industrial partners.

Reducing machine downtime, manufacturing defects, and excessive scrap

Im Focus: Successfully Tested in Praxis: Bidirectional Sensor Technology Optimizes Laser Material Deposition

The quality of additively manufactured components depends not only on the manufacturing process, but also on the inline process control. The process control ensures a reliable coating process because it detects deviations from the target geometry immediately. At LASER World of PHOTONICS 2019, the Fraunhofer Institute for Laser Technology ILT will be demonstrating how well bi-directional sensor technology can already be used for Laser Material Deposition (LMD) in combination with commercial optics at booth A2.431.

Fraunhofer ILT has been developing optical sensor technology specifically for production measurement technology for around 10 years. In particular, its »bd-1«...

Im Focus: The hidden structure of the periodic system

The well-known representation of chemical elements is just one example of how objects can be arranged and classified

The periodic table of elements that most chemistry books depict is only one special case. This tabular overview of the chemical elements, which goes back to...

Im Focus: MPSD team discovers light-induced ferroelectricity in strontium titanate

Light can be used not only to measure materials’ properties, but also to change them. Especially interesting are those cases in which the function of a material can be modified, such as its ability to conduct electricity or to store information in its magnetic state. A team led by Andrea Cavalleri from the Max Planck Institute for the Structure and Dynamics of Matter in Hamburg used terahertz frequency light pulses to transform a non-ferroelectric material into a ferroelectric one.

Ferroelectricity is a state in which the constituent lattice “looks” in one specific direction, forming a macroscopic electrical polarisation. The ability to...

Im Focus: Determining the Earth’s gravity field more accurately than ever before

Researchers at TU Graz calculate the most accurate gravity field determination of the Earth using 1.16 billion satellite measurements. This yields valuable knowledge for climate research.

The Earth’s gravity fluctuates from place to place. Geodesists use this phenomenon to observe geodynamic and climatological processes. Using...

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

Non-invasive view into the heart

24.06.2019 | Medical Engineering

Fingerprint spectroscopy within a millisecond

24.06.2019 | Trade Fair News

Straight to the heart

24.06.2019 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>