A look into one of our laboratories for physical characterization showing instruments for the measurement of magnetic properties, electrical and thermal transport properties, specific heat capacity etc at low temperatures and in high magnetic fields

Publications of K. Kovnir

Journal Article (27)

2012
Journal Article
Armbrüster, M.; Kovnir, K.; Friedrich, M.; Teschner, D.; Wowsnick, G.; Hahne, M.; Gille, P.; Szentmiklosi, L.; Feuerbacher, M.; Heggen, M. et al.; Girgsdies, F.; Rosenthal, D.; Schlögl, R.; Grin, Y.: Al13Fe4 as a low-cost alternative for palladium in heterogeneous hydrogenation. Nature Materials 11, pp. 690 - 693 (2012)
Journal Article
Ray, S.; Kolen'ko, Y. V.; Kovnir, K. A.; Lebedev, O. I.; Turner, S.; Chakraborty, T.; Erni, R.; Watanabe, T.; Van Tendeloo, G.; Yoshimura, M. et al.; Itoh, M.: Defect controlled room temperature ferromagnetism in Co-doped barium titanate nanocrystals. Nanotechnology 23 (2), 025702, pp. 025702-1 - 025702-10 (2012)
2011
Journal Article
Kovnir, K.; Stockert, U.; Budnyk, S.; Prots, Y.; Baitinger, M.; Paschen, S.; Shevelkov, A. V.; Grin, Y.: Introducing a Magnetic Guest to a Tetrel-Free Clathrate: Synthesis, Structure, and Properties of EuxBa8–xCu16P30 (0 ≤ x ≤ 1.5). Inorganic Chemistry 20 (20), pp. 10387 - 10396 (2011)
2010
Journal Article
Armbrüster, M.; Kovnir, K.; Behrens, M.; Teschner, D.; Grin, Y.; Schlögl, R.: Pd−Ga Intermetallic Compounds as Highly Selective Semihydrogenation Catalysts. Journal of the American Chemical Society 132 (42), pp. 14745 - 14747 (2010)
Journal Article
Gille, P.; Ziemer, T.; Schmidt, M.; Kovnir, K.; Burkhardt, U.; Armbrüster, M.: Growth of large PdGa single crystals from the melt. Intermetallics 18 (8), pp. 1663 - 1668 (2010)
Journal Article
Zaikina, J. V.; Mori, T.; Kovnir, K.; Teschner, D.; Senyshyn, A.; Schwarz, U.; Grin, Y.; Shevelkov, A. V.: Bulk and Surface Structure and High-Temperature Thermoelectric Properties of Inverse Clathrate-III in the Si-P-Te System. Chemistry - A European Journal 16 (42), pp. 12582 - 12589 (2010)
2009
Journal Article
Galloway, E.; Armbrüster, M.; Kovnir, K.; Tikhov, M. S.; Lambert, R. M.: Bromine-promoted PtZn is very effective for the chemoselective hydrogenation of crotonaldehyde. Journal of Catalysis 261, pp. 60 - 65 (2009)
Journal Article
Kovnir, K.; Armbrüster, M.; Teschner, D.; Venkov, T. V.; Szentmiklósi, L.; Jentoft, F. C.; Knop-Gericke, A.; Grin, Y.; Schlögl, R.: In situ surface characterization of the intermetallic compound PdGa - A highly selective hydrogenation catalyst. Surface Science 603, pp. 1784 - 1792 (2009)
Journal Article
Kovnir, K.; Osswald, J.; Armbrüster, M.; Teschner, D.; Weinberg, G.; Wild, U.; Knop-Gericke, A.; Ressler, T.; Grin, Y.; Schlögl, R.: Etching of the intermetallic compounds PdGa and Pd3Ga7: An effective way to increase catalytic activity? Journal of Catalysis 264, pp. 93 - 103 (2009)
Journal Article
Zaikina, J. V.; Kovnir, K. A.; Burkhardt, U.; Schnelle, W.; Haarmann, F.; Schwarz, U.; Grin, Y.; Shevelkov, A. V.: Cationic Clathrate I Si46-xPxTey (6.6(1) ≤ y ≤ 7.5(1), x ≤ 2y): Crystal Structure, Homogeneity Range, and Physical Properties. Inorganic Chemistry 48, pp. 3720 - 3730 (2009)
2008
Journal Article
Kovnir, K.; Schmidt, M.; Waurisch, C.; Armbrüster, M.; Prots, Y.; Grin, Y.: Refinement of the crystal structure of dipalladium gallium, Pd2Ga. Zeitschrift für Kristallographie - New Crystal Structures 223, pp. 7 - 8 (2008)
Journal Article
Kovnir, K.; Teschner, D.; Armbrüster, M.; Schnörch, P.; Hävecker, M.; Knop-Gericke, A.; Grin, Y.; Schlögl, R.: Pinning the catalytic centre: A new concept for catalysts development. Noble Traces - BESSY Highlights 2007, pp. 22 - 23 (2008)
Journal Article
Osswald, J.; Giedigkeit, R.; Jentoft, R. E.; Armbrüster, M.; Girgsdies, F.; Kovnir, K.; Ressler, T.; Grin, Y.; Schlögl, R.: Palladium-gallium intermetallic compounds for the selective hydrogenation of acetylene Part I: Preparation and structural investigation under reaction conditions. Journal of Catalysis 258, pp. 210 - 218 (2008)
Journal Article
Osswald, J.; Kovnir, K.; Armbrüster, M.; Giedigkeit, R.; Jentoft, R. E.; Wild, U.; Grin, Y.; Schlögl, R.: Palladium-gallium intermetallic compounds for the selective hydrogenation of acetylene Part II: Surface characterization and catalytic performance. Journal of Catalysis 258, pp. 219 - 227 (2008)
Journal Article
Zaikina, J. V.; Kovnir, K. A.; Haarmann, F.; Schnelle, W.; Burkhardt, U.; Borrmann, H.; Schwarz, U.; Grin, Y.; Shevelkov, A. V.: The First Silicon-Based Cationic Clathrate III with High Thermal Stability: Si172-xPxTey (x = 2y, y > 20). Chemistry - A European Journal 14, pp. 5414 - 5422 (2008)
2007
Journal Article
Kolen'ko, Y. V.; Kovnir, K. A.; Neira, I. S.; Taniguchi, T.; Ishigaki, T.; Watanabe, T.; Sakamoto, N.; Yoshimura, M.: A Novel, Controlled, and High-Yield Solvothermal Drying Route to Nanosized Barium Titanate Powders. Journal of Physical Chemistry C 111, pp. 7306 - 7318 (2007)
Journal Article
Kovnir, K.; Armbrüster, M.; Teschner, D.; Venkov, T. V.; Jentoft, F. C.; Knop-Gericke, A.; Grin, Y.; Schlögl, R.: A new approach to well-defined, stable and site-isolated catalysts. Science and Technology of Advanced Materials 8, pp. 420 - 427 (2007)
Journal Article
Zaikina, J. V.; Kovnir, K. A.; Schwarz, U.; Borrmann, H.; Shevelkov, A. V.: Crystal structure of silicon phosphorus telluride, Si46-xPxTey(y=7.35, 6.98, 6.88; x ≤ 2y), a cationic clathrate-I. Zeitschrift für Kristallographie - New Crystal Structures 222, pp. 177 - 179 (2007)
Journal Article
Zaikina, J. V.; Kovnir, K. A.; Sobolev, A. V.; Presniakov, I. A.; Prots, Y.; Baitinger, M.; Schnelle, W.; Olenev, A. V.; Lebedev, O. I.; Van Tendeloo, G. et al.; Grin, Y.; Shevelkov, A. V.: Sn20.53.5As22I8: A Largely Disordered Cationic Clathrate with a New Type of Superstructure and Abnormally Low Thermal Conductivity. Chemistry - A European Journal 13, pp. 5090 - 5099 (2007)
Journal Article
Zaikina, J. V.; Schnelle, W.; Kovnir, K. A.; Olenev, A. V.; Grin, Y.; Shevelkov, A. V.: Crystal structure, thermoelectric and magnetic properties of the type-I clathrate solid solutions Sn24P19.3(2)BrxI8-x (0 ≤ X ≤ 8) and Sn24P19.3(2)ClyI8-y (y ≤ 0.8). Solid State Sciences 9, pp. 664 - 671 (2007)
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