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Journal Articles

Effect of uranium deficiency on normal and superconducting properties in unconventional superconductor UTe$$_2$$

Haga, Yoshinori; Opletal, P.; Tokiwa, Yoshifumi; Yamamoto, Etsuji; Tokunaga, Yo; Kambe, Shinsaku; Sakai, Hironori

Journal of Physics; Condensed Matter, 34(17), p.175601_1 - 175601_7, 2022/04

Journal Articles

Effect of pressure on magnetism of UIrGe

Pospisil, J.; Gochi, Jun*; Haga, Yoshinori; Honda, Fuminori*; Uwatoko, Yoshiya*; Tateiwa, Naoyuki; Kambe, Shinsaku; Nagasaki, Shoko*; Homma, Yoshiya*; Yamamoto, Etsuji

Journal of the Physical Society of Japan, 86(4), p.044709_1 - 044709_6, 2017/04

 Times Cited Count:7 Percentile:59.82(Physics, Multidisciplinary)

Journal Articles

Crossover phase diagram and electronic state in the heavy-fermion metamagnets UIr$$_2$$Zn$$_{20}$$ and UCo$$_2$$Zn$$_{20}$$

Hirose, Yusuke*; Takeuchi, Tetsuya*; Honda, Fuminori*; Yoshiuchi, Shingo*; Hagiwara, Masayuki*; Yamamoto, Etsuji; Haga, Yoshinori; Settai, Rikio*; Onuki, Yoshichika

Journal of the Physical Society of Japan, 84(7), p.074704_1 - 074704_10, 2015/07

 Times Cited Count:6 Percentile:50.68(Physics, Multidisciplinary)

Journal Articles

Magnetic and electronic properties of URu$$_2$$Si$$_2$$ revealed by comparison with nonmagnetic references ThRu$$_2$$Si$$_2$$ and LaRu$$_2$$Si$$_2$$

Emi, Naoya*; Hamabata, Ryosuke*; Nakayama, Daisuke*; Miki, Toshihiro*; Koyama, Takehide*; Ueda, Koichi*; Mito, Takeshi*; Kohori, Yo*; Matsumoto, Yuji*; Haga, Yoshinori; et al.

Journal of the Physical Society of Japan, 84(6), p.063702_1 - 063702_4, 2015/06

 Times Cited Count:10 Percentile:64.05(Physics, Multidisciplinary)

Journal Articles

High-temperature magnetic investigations on uranium compounds

Galatanu, A.; Haga, Yoshinori; Matsuda, Tatsuma; Ikeda, Shugo; Yamamoto, Etsuji; Aoki, Dai*; Takeuchi, Tetsuya*; Onuki, Yoshichika

Journal of the Physical Society of Japan, 74(5), p.1582 - 1597, 2005/05

 Times Cited Count:36 Percentile:80.41(Physics, Multidisciplinary)

We investigated the magnetic property of typical uranium compounds by measuring the magnetic susceptibility in an extended temperature range up to about 800 K. The magnetic susceptibility follows the Curie-Weiss law for a localized 5$$f^2$$-electron compound UPd$$_3$$ and a ferromagnetic insulator UFe$$_4$$P$$_{12}$$. In most of the investigated compounds we observed a crossover effect of the 5$$f$$ electrons from a low-temperature itinerant nature to a high-temperature localized one. This is found to be characteristic for ferromagnetic superconductors such as UGe$$_{2}$$ and UIr, and also for antiferromagnets like USb$$_{2}$$ or UNiSb$$_{2}$$. To assess an extension of this characteristic property in the uranium compounds we also investigated typical 5$$f$$-itinerant compounds like UGa$$_{3}$$ and UPtGa$$_5$$. The crossover effect is essentially important in heavy fermion compounds such as UPt$$_3$$, UPd$$_2$$Al$$_3$$ and URu$$_2$$Si$$_2$$. Even in the paramagnetic compound of UB$$_4$$, the magnetic susceptibility is not temperature-independent, but approaches a 5$$f$$-localized tendency at high temperatures. Since the samples were single crystals, we were also able to trace the evolution of the magnetic anisotropy. The high-temperature anisotropic susceptibility data were analyzed on the basis of the crystalline electric field scheme.

JAEA Reports

Synthetic methods of uranium and neptunium compounds from solutions

Saeki, Masakatsu

JAERI-Review 2003-030, 50 Pages, 2003/11


In this review, synthetic methods of uranium and neptunium compounds mainly from solutions and their natures are summarized. For uranium, 3 compounds of trivalent, 4 compounds of tetravalent and 23 compounds of hexavalent are described in slight details. For neptunium, synthetic methods of stock solutions for pentavalent and hexavalent neptunium, 4 items (6 compounds) of trivalent, 8 items (19 compounds) of tetravalent, 28 items (29 compounds) of pentavalent, 10 items (14 compounds) of hexavalent and 5 items (9 compounds) of heptavalent are described in slight details. Furthermore, on compounds which can not be described in details, the names are listed with literatures. The materials used here have been collected during the research activities on Moessbauer spectroscopic studies of uranium and neptunium compounds, then, the reviews on Moessbauer spectroscopic studies of actinoid compounds are also listed.

Journal Articles

The Effect of organic substitutes and structure of organophosphorus compounds on their extraction abilities for uranium


Analytica Chimica Acta, 25(3), p.212 - 218, 1961/00

 Times Cited Count:37

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