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</o:shapelayout></xml><![endif]--></head><body lang=SL link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><a href="https://dnevi.ijs.si/"><span style='color:windowtext;text-decoration:none'><img border=0 width=1300 height=268 style='width:13.5416in;height:2.7916in' id="Picture_x0020_1" src="cid:image001.png@01DA7947.0518A0F0" alt="Banner SLO ANG"></span></a><o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Vabimo vas na predavanje v okviru »Kolokvijev IJS« ob letošnjih Dnevih Jožefa Stefana, ki bo <b><u>danes</u>, v petek, 22.</b> <b>marca 2024, ob 13:00</b> v Veliki predavalnici Instituta »Jožef Stefan« na Jamovi cesti 39 v Ljubljani. Predavanje bo <b>v angleščini</b>. Na voljo bodo kava, pijača in prigrizki.<o:p></o:p></p><p class=MsoNormal><span style='font-size:16.0pt'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:16.0pt'>Novi materiali pri visokih tlakih</span></b><b><span style='font-size:16.0pt'><o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:16.0pt'><o:p> </o:p></span></p><p class=MsoNormal><b><u><span lang=EN-US style='font-size:12.0pt'>prof. dr. J. Paul Attfield</span></u></b><b><u><span style='font-size:12.0pt'><o:p></o:p></span></u></b></p><p class=MsoNormal><i>Center za raziskave pri esktremnih pogojih in Univerza v Edinburghu, Velika Britanija<o:p></o:p></i></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Odkrivanje novih materialov je pomembno za temeljno znanost in lahko vodi do energetskih, okoljskih in številnih drugih aplikacij. Visokotlačne metode so pomembne za sintezo novih materialov in za raziskovanje sprememb v strukturi in lastnostih v gosti snovi. Predstavil bom nove oksidne in nitridne materiale, ki smo jih nedavno sintetizirali v naši skupini in so zanimivi za elektronske in energetske aplikacije. Prvi primer so oksidni perovskiti z Mn<sup>2+</sup> na mestih A, ki so zanimivi za magnetne in spintronske aplikacije. Drugi primer je nedavni izjemen razpon novih železnih oksidov sintetiziranih pri visokih tlakih. Raziskali smo substitucijsko kemijo Fe<sub>4</sub>O<sub>5</sub>, kjer bom opisal primer CaFe<sub>3</sub>O<sub>5</sub> pripravljenega pri običajnem tlaku, ki kaže elektronsko ločitev faz. Nazadnje smo nedavno razvili visokotlačno metodo z uporabo natrijevega azida za sintezo nitridov v visokih oksidacijskih stanjih, s pomočjo katere smo prišli do novih nitridnih perovskitov, kot je LaReN<sub>3</sub>, in prvih primerov Ruddlesden-Popperjevih (to je plastovito perovskitnih) nitridov.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>O predavatelju</b>: J. Paul Attfield vodi Katedro za znanost o materialih pri ekstremnih pogojih na Fakulteti za kemijo in Centru za raziskave pri ekstremnih pogojih Univerze v Edinburghu. Je prejemnik medalj Meldole in Corday-Morgana ter nagrade Petra Daya s strani Royal Society of Chemistry, leta 2014 pa je bil izvoljen za člana Kraljeve družbe.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt'>Napovednik predavanja in posnetke preteklih predavanj najdete na <b>novi spletni strani »Kolokvijev IJS«</b> </span><a href="https://kolokviji.ijs.si/"><span style='font-size:10.0pt'>https://kolokviji.ijs.si/</span></a><span style='font-size:10.0pt'>, posnetke pa tudi posebej na </span><a href="https://video.arnes.si/?hashtag=Kolokviji_IJS"><span style='font-size:10.0pt'>https://video.arnes.si/?hashtag=Kolokviji_IJS</span></a><span style='font-size:10.0pt'> (zadnje tri sezone) in </span><a href="http://videolectures.net/kolokviji_ijs"><span style='font-size:10.0pt'>http://videolectures.net/kolokviji_ijs</span></a><span style='font-size:10.0pt'> (starejši).<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>______________<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We invite you to the lecture in the framework of »JSI Colloquia« on<span style='color:black'> this year's Jožef Stefan days</span>, which will take place <b><u>today</u>, Friday, March 22, 2024, at 1:00 PM</b> in the main lecture hall of Jožef Stefan Institute, Jamova cesta 39 in Ljubljana. The lecture will be held <b>in English</b>. Coffee, drinks and snacks will be available.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b><span style='font-size:16.0pt'>New materials from high pressure<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:16.0pt'><o:p> </o:p></span></p><p class=MsoNormal><b><u><span style='font-size:12.0pt'>Prof. dr. </span></u></b><b><u><span lang=EN-US style='font-size:12.0pt'>J. Paul Attfield</span></u></b><b><u><span style='font-size:12.0pt'><o:p></o:p></span></u></b></p><p class=MsoNormal><i>Centre for Science at Extreme Conditions and University of Edinburgh, United Kingdom<o:p></o:p></i></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Discovery of new materials is important to fundamental science and can lead to energy, environmental and many other applications. High pressure methods are important for synthesising new materials and for exploring changes of structure and properties in dense matter. I will present new oxide and nitride materials recently synthesized by our group and of interest for electronic and energy applications. The first example are oxide perovskites with Mn<sup>2+</sup> at A sites of interest for magnetic and spintronic applications. Second, a remarkable variety of new iron oxides has recently been reported at high pressures, and we have explored the substitutional chemistry of Fe<sub>4</sub>O<sub>5</sub>. For instance, CaFe<sub>3</sub>O<sub>5</sub> prepared at ambient pressure shows electronic phase separation. Finally, we have recently developed a high pressure method using sodium azide to synthesise nitrides in high oxidation states giving novel nitride perovskites such as LaReN<sub>3</sub>, and the first examples of Ruddlesden-Popper (i.e., layered perovskite) nitrides.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><b>About the lecturer</b>: J. Paul Attfield holds a Chair in Materials Science at Extreme Conditions at the School of Chemistry and Centre for Science at Extreme Conditions, University of Edinburgh. He received the Royal Society of Chemistry’s Meldola and Corday-Morgan medals and Peter Day award, and he was elected a Fellow of the Royal Society in 2014.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt'>The lecture trailer and recordings of past lectures can be found on the <b>new website of »JSI colloquia«</b></span> <a href="https://kolokviji.ijs.si/"><span style='font-size:10.0pt'>https://kolokviji.ijs.si/</span></a><span style='font-size:10.0pt'>, and recordings specifically at </span><a href="https://video.arnes.si/en/?hashtag=Kolokviji_IJS"><span style='font-size:10.0pt'>https://video.arnes.si/en/?hashtag=Kolokviji_IJS</span></a><span style='font-size:10.0pt'> (last three seasons) and </span><a href="http://videolectures.net/kolokviji_ijs"><span style='font-size:10.0pt'>http://videolectures.net/kolokviji_ijs</span></a><span style='font-size:10.0pt'> (older).<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>