Magnetic structure of the CeScSi-type RScGe compounds (R=Pr, Nd, Tb)

Manfrinetti, P.; Морозкин, А.В.; Isnard, O.; Henry, Paul; Palenzona, A.

doi:10.1016/j.jallcom.2006.11.057

Cited by 24 publications

(37 citation statements)

References 8 publications

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“…The report shows a magnetic transition at 46 K along a and c-axes for CeScSi and broad maximum around 27 and 25 K along these two axes, respectively. Later, Singh et al [4] reported that the compounds CeScSi and CeScGe order antiferromagnetically below 26 and 46 K. Neutron diffraction study on these compounds shows that TbScGe and NdScGe have collinear FM structures [149]. Tencé et al [150] reported that TbScGe orders ferromagnetically below 250 K. Some other interesting properties were also observed in this series of compounds.…”

Section: Rscx Compoundsmentioning

confidence: 68%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

256

124

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RTX (R=rare earths, T= 3d/4d/5d, transition metals such as Sc, Ti, Mn, Fe, Co, Ni, Cu, Ru, Rh, Pd, Ag, Os, Ir, Pt, Au, and X=p-block elements such as Al, Ga, In, Si, Ge, Sn, As, Sb, Bi) series is a huge family of intermetallics compounds. These compounds crystallize in different crystal structures depending on the constituents. Though these compounds have been known for a long time, they came to limelight recently in view of the large magnetocaloric effect (MCE) and magnetoresistance (MR) shown by many of them. Most of these compounds crystallize in hexagonal and tetragonal crystal structures. Some of them show crystal structure modification with annealing temperature; while a few of them show iso-structural transition in the paramagnetic regime. Their magnetic ordering temperatures vary from very low temperatures to temperatures well above room temperature (~510 K). Depending on the crystal structure, they show a variety of magnetic and electrical properties.These compounds have been characterized by means of a variety of techniques/measurements such as x-ray diffraction, neutron diffraction, magnetic properties, heat capacity, magnetocaloric properties, electrical resistivity, magnetoresistance, thermoelectric power, thermal expansion, Hall effect, optical properties, XPS, Mössbauer spectroscopy, ESR, μSR, NMR, NQR etc. Some amount of work on theoretical calculations on electronic structure, crystal field interaction and exchange interactions has also been reported. The interesting aspect of this series is that they show a variety of physical properties such as Kondo effect, heavy fermion behavior, spin glass state, intermediate valence, superconductivity, multiple magnetic transitions, metamagnetism, large MCE, large positive as well as negative MR, spin orbital compensation, magnetic polaronic behavior, pseudo gap effect etc.Except Mn, no other transition metal in these compounds possesses considerable magnetic moments.Because of this RMnX compounds in general have high ordering temperatures. Interstitial modification using hydrogen and nitrogen is found to alter their crystal structures and magnetic properties considerably. RTX compounds also show interesting pressure effects on their structural and magnetic properties. In summary, these compounds show variety of physical properties over a wide range of temperatures. This review is intended to cover all the important results obtained in this family, particularly in the last few years.

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Section: Rscx Compoundsmentioning

confidence: 68%

Review on magnetic and related properties of RTX compounds

Gupta

Суреш

2015

Journal of Alloys and Compounds

256

124

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“…For a magnetic point of view, the RMgX (X = Ga, In) compounds exhibit a low temperature antiferromagnetic order but they crystallize in the ZrNiAl-type [19][20][21][22], while the CeScSi-type compounds were generally ferromagnets [2,3,[8][9][10][11][12][13]. Consequently, the RMgSn compounds (R = Pr, Nd, Sm, Gd-Tm) represent the first CeScSi-type series with antiferromagnetic behavior.…”

Section: Resultsmentioning

confidence: 99%

“…Recently, this structural transition has been observed by insertion of carbon or boron atoms in the CeFeSi-type RTiGe compounds [6,7]. The previous studies have evidenced that most of the ternary compounds with CeScSi-type structure are ferromagnets (GdTiGe [2,3], RScSi with R = Ce, Nd, Sm, Gd [8][9][10], RScGe with R = Ce-Nd, Sm, Gd, Tb [8][9][10][11], RZrSb with R = Gd-Tm [12,13]. Only few compounds are antiferromagnetically ordered (PrScSi [8], PrScGe [8,11], and ErZrSb [13] CeScSi (R = Y, Nd, Sm, Gd-Tm, Lu) and ZrNiAl (R = Yb) types of structure but, surprisingly, their magnetic behaviors have not been analyzed.…”

Section: Introductionmentioning

confidence: 99%

Magnetic properties of the ternary RMgSn (R=Pr, Nd, Sm, Gd–Tm): First series of antiferromagnetic CeScSi-type structure compounds

Lemoine

Vernière

Marêché

et al. 2010

Journal of Alloys and Compounds

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“…The silicides and germanides have been intensively studied with respect to their magnetic properties since several representatives exhibit comparatively high magnetic ordering temperatures: T N ¼26 and 43 K for CeScSi and CeScGe [6][7][8][9], the 194 K ferromagnet NdScGe [10] or ferromagnetic TbScGe (T C ¼216 K) [11]. The Curie temperatures of GdScSi (354 K) and GdScGe (349 K) are even above room temperature and both compounds show a moderate magnetocaloric effect [12].…”

Section: Introductionmentioning

confidence: 99%

Hydrogenation studies on NdScSi and NdScGe

Tencé

Mahon

Gaudin

et al. 2016

Journal of Solid State Chemistry

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READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE.http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/copyright Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n'arrivez pas à les repérer, communiquez avec nous à PublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. Questions? Contact the NRC Publications Archive team atPublicationsArchive-ArchivesPublications@nrc-cnrc.gc.ca. If you wish to email the authors directly, please see the first page of the publication for their contact information. NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. NRC Publications Record / Notice d'Archives des publications de CNRC:http://nparc.cisti-icist.nrc-cnrc.gc.ca/eng/view/object/?id=bdfd6936-d9f6-4f07-9806-797f96ca9512 http://nparc.cisti-icist.nrc-cnrc.gc.ca/fra/voir/objet/?id=bdfd6936-d9f6-4f07-9806-797f96ca9512 NdScSi and NdScGe were synthesized from the elements via arc-melting and subsequent annealing. Their ordered La 2 Sb type structures, with space group I4/mmm, were refined from single crystal X-ray diffractometer data: a ¼428.94(6) and b ¼1570.5(3) pm, wR2 ¼ 0.0395, 309 F 2 values for NdScSi and a ¼431.2(1) and c ¼1581.3(5) pm, wR2 ¼ 0.1220, 227 F 2 values for NdScGe, with 11 variables per refinement.Hydrogen insertion was performed on both Nd-based intermetallics by solid/gas reaction. Hydrogen uptake keeps the pristine compound space group but yields an anisotropic expansion of the unit cell with a large increase of c ( E þ7%) and a slight decrease of a ( E À 1.7%) parameters. Hydrogen absorption at 350°C and under 5 bar of H 2 pressure shows that the hydride NdScSiH 1.48(5) is formed. An in-situ neutron diffraction study during the deuteration of NdScSi reveals for the first time in a CeScSi-type compound, the possibility to fill two interstitial sites with deuterium atoms, leading to the composition NdScSiD 1.5 for the deuteride adopting then the La 2 Fe 2 Se 2 O 3 -type structure.From magnetization measurements, we evidence that hydrogenation strongly reduces the Curie temperature of NdScSi (T C ¼ 175 K) and NdScGe (T C ¼194 K) since NdScSiH 1.5 and NdScGeH x undergo a magnetic transition at 4 K and around 2 K, respectively.

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Magnetic structure of the CeScSi-type RScGe compounds (R=Pr, Nd, Tb)

Cited by 24 publications

References 8 publications

Review on magnetic and related properties of RTX compounds

Review on magnetic and related properties of RTX compounds

Magnetic properties of the ternary RMgSn (R=Pr, Nd, Sm, Gd–Tm): First series of antiferromagnetic CeScSi-type structure compounds

Hydrogenation studies on NdScSi and NdScGe

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