Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Tateiwa, Naoyuki"'
Publikováno v:
Phys. Rev. B 100, 064413 (2019)
We report the novel critical behavior of magnetization in low carrier concentration systems UTeS and USeS that exhibit the large negative magnetoresistance around the ferromagnetic transition temperatures T_C ~ 85 and 23 K, respectively. UTeS and USe
Externí odkaz:
http://arxiv.org/abs/1908.07652
Publikováno v:
Phys. Rev. B 99, 094417 (2019)
We study the critical behavior of dc magnetization in the uranium ferromagnet URhSi around the paramagnetic to ferromagnetic phase transition at T_C~ 10 K with a modified Arrott plot, a Kouvel-Fisher plot, the critical isotherm analysis and the scali
Externí odkaz:
http://arxiv.org/abs/1903.06841
Publikováno v:
Phys. Rev. Lett. 121, 237001 (2018)
We have measured magnetization at high pressure in the uranium ferromagnetic superconductor UGe$_2$ and analyzed the magnetic data using Takahashi's spin fluctuation theory. There is a peak in the pressure dependence of the width of the spin fluctuat
Externí odkaz:
http://arxiv.org/abs/1812.01771
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
Publikováno v:
PRB 98, 014430 (2018)
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 magneti
Externí odkaz:
http://arxiv.org/abs/1807.08544
Publikováno v:
N. Tateiwa et al., Phys. Rev. B 97, 064423 (2018)
The critical behavior of dc magnetization in the uranium ferromagnet URhAl with the hexagonal ZrNiAl-type crystal structure has been studied around the ferromagnetic transition temperature T_C. The critical exponent beta for the temperature dependenc
Externí odkaz:
http://arxiv.org/abs/1803.00145
Autor:
Tateiwa, Naoyuki, Pospisil, Jiri, Haga, Yoshinori, Sakai, Hironori, Matsuda, Tatsuma D., Yamamoto, Etsuji
Actinide compounds with 5f electrons have been attracting much attention because of their interesting magnetic and electronic properties such as heavy fermion state, unconventional superconductivity, co-existence of the superconductivity and magnetis
Externí odkaz:
http://arxiv.org/abs/1802.09672
Autor:
Pospíšil, Jiří, Haga, Yoshinori, Miyake, Atsushi, Kambe, Shinsaku, Tateiwa, Naoyuki, Tokunaga, Yo, Honda, Fuminori, Nakamura, Ai, Homma, Yoshiya, Tokunaga, Masashi, Aoki, Dai, Yamamoto, Etsuji
Publikováno v:
Physica B (2017)
We prepared single crystals in UCo1-xRhxGe and UIr1-xRhxGe systems to establish a complex dU-U-T (dU-U is the shortest interatomic uranium distance and T is temperature) magnetic phase diagram. This recognized a characteristic maximum in magnetic sus
Externí odkaz:
http://arxiv.org/abs/1711.00298
Autor:
Pospíšil, Jiří, Haga, Yoshinori, Nakajima, Kunihisa, Ishikawa, Norito, Císařová, Ivana, Tateiwa, Naoyuki, Yamamoto, Etsuji, Yamamura, Tomoo
Publikováno v:
Solid State Communications 268, 12-14 (2017)
We have discovered a new compound of the composition ScPd2Al3 crystallizing in unknown structure type. Moreover, ScPd2Al3 reveals polymorphism. We have found an orthorhombic crystal structure at room temperature and a high temperature cubic phase. Th
Externí odkaz:
http://arxiv.org/abs/1709.06843
Autor:
Tateiwa, Naoyuki, Pospisil, Jiri, Haga, Yoshinori, Sakai, Hironori, Matsuda, Tatsuma D., Yamamoto, Etsuji
Publikováno v:
Phys. Rev. B. 96, 035125 (2017)
We have carried out an analysis of magnetic data in 69 uranium, 7 neptunium and 4 plutonium ferromagnets with the spin fluctuation theory developed by Takahashi (Y. Takahashi, J. Phys. Soc. Jpn. 55, 3553 (1986)). The basic and spin fluctuation parame
Externí odkaz:
http://arxiv.org/abs/1707.04772
Autor:
Pospisil, Jiri, Haga, Yoshinori, Kambe, Shinsaku, Tokunaga, Yo, Tateiwa, Naoyuki, Aoki, Dai, Honda, Fuminori, Nakamura, Ai, Homma, Yoshiya, Yamamoto, Etsuji, Yamamura, Tomoo
Publikováno v:
Phys. Rev. B 95, 155138, 2017
We investigated the evolution of magnetism in the UIr1-xRhxGe system by the systematic study of high-quality single crystals. Lattice parameters of both parent compounds are very similar resulting in almost identical nearest interatomic uranium dista
Externí odkaz:
http://arxiv.org/abs/1704.04013