Instytut Wysokich Ciśnień

The 8th International Symposium on Growth of III-Nitrides (ISGN-8) is a biennial international conference hosted on a rotating basis by different countries worldwide. This symposium focuses on the latest advancements and future directions in the growth of bulk crystals, thin films, and nanostructures of III-nitrides. Last edition of ISGN-7 was organized by our Institute in Warsaw, Poland.

This year ISGN-8 is organized in National Cheng Kung University (NCKU), Tainan, Taiwan on November 9-12, 2025. It comprises 10 parallel sessions and 1 special session. Prof. Michał Boćkowski, Director of Institute of High Pressure Physics PAS will have an invited talk in the Session S1. III-N Bulk Crystal Growth.

Abstract submission deadline is July 4, 2025.

Profesor Michał Boćkowski, dyrektor IWC PAN, został zaproszony do wygłoszenia referatu zaproszonego na konferencji ION 2025 – Ion Implantation and Other Applications of Ions and Electrons, która odbędzie się w dniach 24–26 czerwca 2025 r. w Lublinie, organizowanej przez Uniwersytet Marii Curie-Skłodowskiej i Politechnikę Lubelską.

Tytuł referatu to: „Shaping the Future of GaN-on-GaN Technology”. Wystąpienie będzie poświęcone rozwojowi nowoczesnych technologii opartych na strukturach GaN-on-GaN oraz ich potencjałowi w zastosowaniach wysokiej mocy i wysokiej częstotliwości.

Strona konferencji: https://ion.umcs.pl

In the recent study, Prof. Singh’s research team has investigated the effect of “spark plasma sintering (SPS)” process on the superconducting properties of iron-based superconductors in collaboration with Shibaura Institute of Technology (SIT), Japan. They have also conducted a comparative analysis of conventional, high-gas-pressure, and SPS techniques to understand their impact on superconducting properties. Interestingly, the SPS process increased the critical current density without significantly affecting the critical transition temperature, which is attributed to the enhanced density of the samples. More details about this study can be found in the published paper by: Mohammad Azam, Tatiana Zajarniuk, Konrad Kwatek, Paolo Mele, and Shiv J. Singh entitled “Effect of spark plasma sintering on the superconducting properties of Sm-based oxypnictide” Cryogenics 150, 104125 (2025) (Elsevier); https://doi.org/10.1016/j.cryogenics.2025.104125

Figure: The variations of (a) the onset transition temperature (T_c^onset), (b) the transition width (ΔT), (c) the room temperature resistivity (ρ_{300 K}), (d) the Residual Resistance Ratio (RRR = ρ_{300 K} / ρ_{60 K}), and (e) the critical current density (J_c) of different SmFeAsO_0.80F_0.20 bulks prepared by conventional (0 MPa), high gas pressure (500 MPa) and SPS (45 MPa) processes under the different growth pressures.