NpSb and NpTe show antiferromagnetic order below 197 and 30 K, respectively. Magnetization experiments on samples with Te concentration x = 0.05, 0.10, 0.15 are reported. Hysteresis loops were measured at 4.2 K in magnetic fields applied along the main cubic axes. Neutron experiments have been carried out on the sample x = 0.05. Samples with x = 0.10 and 0.15 are ferromagnets with moments along <111>. The sample with x = 0.05 is a collinear ferromagnet at high temperature (Tc = 143K). Below T0 = 89K an AF-type I component develops inducing a non-collinear ferromagnetic ordering with moments alternatively close to <111> and <111> directions.
ChemInformVolume 21, Issue 6 Reviews ChemInform Abstract: Magnetic and Electronic Properties of Transuranium Compounds J. ROSSAT-MIGNOD, J. ROSSAT-MIGNOD IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorP. BURLET, P. BURLET IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorJ. M. FOURNIER, J. M. FOURNIER IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorE. PLESKA, E. PLESKA IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorS. QUEZEL, S. QUEZEL IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this author J. ROSSAT-MIGNOD, J. ROSSAT-MIGNOD IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorP. BURLET, P. BURLET IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorJ. M. FOURNIER, J. M. FOURNIER IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorE. PLESKA, E. PLESKA IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this authorS. QUEZEL, S. QUEZEL IRF, Cent. Etud. Nucl., 38041 Grenoble, Fr.Search for more papers by this author First published: February 6, 1990 https://doi.org/10.1002/chin.199006327Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article. Volume21, Issue6February 6, 1990 RelatedInformation
Plutonium monochalcogenides show an almost temperature independent magnetization, while monopnictides are strongly magnetic. Since a divalent state is essentially excluded by the lattice parameters, the understanding of these compounds represents a great challenge. We report resistivity measurements performed on single crystals of PuS, PuSe and PuTe. The resistivity of all three chalcogenides is found to increase continuously from room temperature down to the lowest temperature with two changes of thermal behavior around 200 and 30 K. These compounds can be viewed as small gap semiconductors. We suggest that plutonium monochalcogenides are high-TK heavy fermions, their ground state being a weak magnetic nonconducting 6d1-5f5 Kondo state.
NpRu2Si2 has been recently synthesized and very small single crystals have been isolated (0.1 mm3). We report measurements of magnetization, electrical resistivity, neutron diffraction and Mössbauer effect performed on this intermetallic compound which orders magnetically below Tn = 28 K.
The physics of uranium and transuranium materials has become very attractive during the last few years and will continue to develop in the next decade. Main results obtained on Np and Pu pnictides and chalcogenides will be summarized.
Resistivity measurements on NpTe single crystal are presented. Its temperature dependence cannot be easily understood either from a metallic or semiconducting point of view: below room temperature p first increases reaching. a maximum at T,, > TN and then decreases saturing near T = 0 K to po which is larger than P300.