Magnetic field induced phenomena in UIrGe in fields applied along b axis
| Autor: | Pospisil, Jiri, Haga, Yoshinori, Kohama, Yoshimitsu, Miyake, Atsushi, Kambe, Shinsaku, Tateiwa, Naoyuki, Valiska, Michal, Proschek, Petr, Prokleska, Jan, Sechovsky, Vladimir, Tokunaga, Masashi, Kindo, Koichi, Matsuo, Akira, Yamamoto, Etsuji |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | PRB 98, 014430 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevB.98.014430 |
| Popis: | The metamagnetic transition between the antiferromagnetic and paramagnetic state in UIrGe has been studied at various temperatures by magnetization, heat capacity and magnetocaloric-effect measurements on a single crystal in static and pulsed magnetic fields applied along the orthorhombic b-axis. A first-order transition is observed at temperatures below 13 K and a second-order one at higher temperatures up to the N\'eel temperature (TN = 16.5 K). The first-order transition is accompanied by a dramatic increase of the Sommerfeld coefficient. Magnetization measurements extended to the paramagnetic range revealed an anomalous S-shape (inflection point at a magnetic field Hm) in magnetization isotherms at temperatures above 13 K and a temperature dependence of susceptibility with a maximum at Tmax well above TN. The lines representing the temperature-induced evolution of Hm and field-induced evolution of Tmax, respectively, are bound for the point in the magnetic phase diagram at which the order of metamagnetic transition changes. A tentative scenario explaining these anomalies by antiferromagnetic correlations or short-range order in the paramagnetic state is discussed. Comment: Accepted to PRB |
| Databáze: | arXiv |
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