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

• Published in: Journal of alloys and compounds Vol. 508; no. 1; pp. 9 - 13
• Main Authors: Lemoine, P., Vernière, A., Marêché, J.F., Malaman, B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.10.2010; Elsevier
• Subjects: Alloys; Antiferromagnetism; Chemical Sciences; Condensed Matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cristallography; Crystallization; Exact sciences and technology; Ferromagnetism; Inorganic chemistry; Lanthanide compounds; Lanthanide magnesium stannides; Magnetic measurement; Magnetic phase boundaries (including magnetic transitions, metamagnetism, etc.); Magnetic properties; Magnetic properties and materials; Magnetically ordered materials: other intrinsic properties; Material chemistry; Materials Science; Neodymium; Physics; Structure of solids and liquids; crystallography; Structure of specific crystalline solids; Studies of specific magnetic materials; Lanthanide compounds; Lanthanide magnesium stannides; Magnetic properties; Electrical conductivity; Ternary compounds; Cerium; Ferromagnetic materials; Gadolinium; Rare earth compounds; Magnetic measurement; Metamagnetism; Rare earths; Yttrium boride; Magnesium; Crystal structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2010.08.020

▶ The RMgSn compounds (R = Pr, Nd, Sm, Gd–Tm) represent the first CeScSi-type series with antiferromagnetic behavior. ▶ The PrMgSn compound presents a structural transition between the TiNiSi-type (H.T. form) and the CeScSi-type (L.T. form). The equiatomic ternary RMgSn compounds crystallize in the CeScSi (Pr, Nd, Sm, Gd–Tm), TiNiSi (Ce, Pr) or ZrNiAl (Yb) type structures. Macroscopic magnetic measurements, performed in the 5–300 K range, show that all the CeScSi-type compounds behave antiferromagnetically (8 < T N < 79 K). They also evidence metamagnetic-like behavior ( H crit < 7 T). The TiNiSi-type compounds are antiferromagnetic and ferromagnetic below 12 K and 52 K for CeMgSn and PrMgSn, respectively.