TY - JOUR
T1 - Magnetism of Nd3+ ions in Nd5Rh4Sn10
AU - Ramakrishnan, S.
AU - Patil, N. G.
AU - Kang, W.
AU - Ha, Heon Ick
AU - Yaung-Soo, Kim
AU - Takeuchi, T.
AU - Miyako, Y.
AU - Menovsky, A. A.
AU - Nieuwenhuys, G. J.
AU - Mydosh, J. A.
PY - 2001/3/30
Y1 - 2001/3/30
N2 - In the family of rare-earth transition metal silicides, compounds belonging to the series R5Ir4Si10 (where R is a rare-earth element from Dy to Lu and Y) exhibits multiple phase transitions. However, there exists a series R5Rh4Sn10, which can only be formed with light rare-earth elements from Ce to Nd. In this work, we report detailed resistivity, susceptibility, magnetization, heat-capacity, thermal expansion, and magnetoresistance studies, which suggest that the Nd3+ moments undergo unusual magnetic orderings in a single crystal of Nd5Rh4Sn10. A second-order magnetic transition at 7.15 K is followed by a first-order transition below 6.15 K that results in a huge heat-capacity peak of 100 J/mol K. The two transitions are strongly suppressed by a magnetic field (4 T) along the c axis while they are only weakly influenced by fields as high as 16 T in the basal plane. Moreover, the magnetoresistance data along the a and c axes from 1.5 to 15 K in fields up to 18 T revealed a giant positive magnetoresistance along the a axis below 6 K and clear evidence of a metamagnetic transition along the c axis. We attribute this unusual magnetic behavior to the unique crystal structure of this Nd5Rh4Sn10 compound with its three different Nd sites.
AB - In the family of rare-earth transition metal silicides, compounds belonging to the series R5Ir4Si10 (where R is a rare-earth element from Dy to Lu and Y) exhibits multiple phase transitions. However, there exists a series R5Rh4Sn10, which can only be formed with light rare-earth elements from Ce to Nd. In this work, we report detailed resistivity, susceptibility, magnetization, heat-capacity, thermal expansion, and magnetoresistance studies, which suggest that the Nd3+ moments undergo unusual magnetic orderings in a single crystal of Nd5Rh4Sn10. A second-order magnetic transition at 7.15 K is followed by a first-order transition below 6.15 K that results in a huge heat-capacity peak of 100 J/mol K. The two transitions are strongly suppressed by a magnetic field (4 T) along the c axis while they are only weakly influenced by fields as high as 16 T in the basal plane. Moreover, the magnetoresistance data along the a and c axes from 1.5 to 15 K in fields up to 18 T revealed a giant positive magnetoresistance along the a axis below 6 K and clear evidence of a metamagnetic transition along the c axis. We attribute this unusual magnetic behavior to the unique crystal structure of this Nd5Rh4Sn10 compound with its three different Nd sites.
UR - http://www.scopus.com/inward/record.url?scp=85039007353&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.63.184402
DO - 10.1103/PhysRevB.63.184402
M3 - Article
AN - SCOPUS:85039007353
SN - 1098-0121
VL - 63
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 18
ER -