GdTiGe (CeScSi-type structure) and GdTiGe (CeFeSi-type structure) as the coherent phases with different magnetic and hydrogenization properties

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

“…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.…”

“…2). The coexistence of these two type structures has been evidenced for the GdTiGe compound [2][3][4], and derived alloys [5]. Recently, this structural transition has been observed by insertion of carbon or boron atoms in the CeFeSi-type RTiGe compounds [6,7].…”

“…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.…”

Neutron powder diffraction and Mössbauer spectroscopy (119Snand155Gd) studies of the CeScSi-type GdMgSn and GdMgPb compounds

“…139) [1][2][3] and order antiferromagnetically with T N ranging from 2.5 K for TmMgPb to 79 K for SmMgSn [3,4]. A few other compounds in the RTX series (where T is a transition metal and X is a p-block element) such as PrScSi [5], PrScGe [5,6], and ErZrSb [7] are antiferromagnetic at low temperatures, while most CeScSi-type compounds are ferromagnetic at low temperatures: RScSi (R = Ce,Nd,Sm,Gd) [5,[8][9][10], RScGe (R = Ce − Nd,Sm,Gd,Tb) [5,6,[8][9][10][11][12][13][14], RZrSb (R = Gd − Tm) [7,15], and RTiGe (R = Gd,Tb) [16][17][18][19][20].…”

Optical properties and electronic structure of the CeFeSi-type GdTiGe and GdTiSi compounds

“…The intermetallic compounds GdTiGe and GdTiSi are also characterized by the essentially high temperatures: for CeScSi-type GdTiGe the T C = 376 K [4], for CeFeSi-type GdTiGe the T N = 412 K [5] and for CeFeSi-type GdTiSi T C = 294 K [6]. A number of experiments on the temperature dependence of magnetic and kinetic properties have been performed to clarify the relationship between the electronic and magnetic structures of these alloys.…”