Possible HighTQin YbAl3C3with 4f13System

Kosaka, Masashi; Kato, Yoshiaki; Araki, Chieko; Môri, N.; Nakanishi, Y.; Yoshizawa, Michito; Ohoyama, Kenji; Martin, C.; Tozer, S. W.

doi:10.1143/jpsj.74.2413

Cited by 17 publications

(13 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While for some of the rare earth quadrupolar ordering is quite common, it is rather exceptional among intermetallic Yb compounds. The only well established example is YbSb [15], which shows a mixed type AFQ at 5.0 K. A quadrupolar ordering has recently be suggested to occur in YbAl 3 C 3 [16], but this claim remains speculative because of an extremely large quadrupolar transition temperature T Q = 80 K, exceeding all previously reported quadrupolar ordering temperatures by a factor of two, and the hexagonal symmetry of the structure, which should lead to a doublet CEF and its behavior in a magnetic field are unusual for magnetic ordering, but very similar to those reported at the ferroquadrupolar ordering in TmAu 2 . In view of the quasiquartet CEF ground state, this strongly suggests the transition at T 0 to be quadrupolar ordering.…”

mentioning

confidence: 99%

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

2006

View full text Add to dashboard Cite

We have investigated the magnetic properties of YbRu 2 Ge 2 by means of magnetic susceptibility χ(T), specific heat C(T) and electrical resistivity ρ(T) measurements performed on flux grown single crystals. The Curie-Weiss behavior of χ(T) along the easy plane, the large magnetic entropy at low temperatures and the weak Kondo like increase in ρ(T) proves a stable trivalent Yb state.Anomalies in C(T), ρ(T) and χ(T) at T 0 = 10.2 K, T 1 = 6.5 K and T 2 = 5.7 K evidence complex ordering phenomena, T 0 being larger than the highest Yb magnetic ordering temperature found up to now. The magnetic entropy just above T 0 amounts to almost Rln4, indicating that the crystal electric field (CEF) ground state is a quasiquartet instead of the expected doublet. The behavior at T 0 is rather unusual and suggest that this transition is related to quadrupolar ordering, being a consequence of the CEF quasiquartet ground state. The combination of a quasiquartet CEF ground state, a high ordering temperature, and the relevance of quadrupolar interactions makes YbRu 2 Ge 2 a rather unique system among Yb based compounds.

show abstract

mentioning

confidence: 99%

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

2006

View full text Add to dashboard Cite

show abstract

“…At T * , neither magnetic nor structural anomalies has been detected by the neutron or the x-ray diffraction measurements on powder samples. 1 Beside, the Ref. 1 indicated an increase in T * under magnetic field higher than 15 Tesla(T) and characteristic softening of elastic constants as temperature decreases toward T * .…”

mentioning

confidence: 92%

“…The details of the sample preparation are described in the Ref. 1. For the measurement at the highest field of 30T, we used a hybrid magnet installed at National Institute for Material Science.…”

mentioning

confidence: 99%

NMR Study of YbAl₃C₃in High Magnetic Field

et al. 2008

Self Cite

View full text Add to dashboard Cite

We have carried out 27 Al nuclear magnetic resonance (NMR) measurements on YbAl3C3. The obtained NMR line is well decomposed into two powder pattern spectra characterized by the nuclear magnetic resonance (NQR) frequency νQ = 3.55MHz (Al 2d-site) and 0.35MHz (Al 4f -site). About the transition at exceptionally high temperature T * = 80K, it was found that the NMR line becomes broadened rapidly just below T * , and T * increases by about 10K at the field of 30 Tesla. Analogous phenomena are commonly seen in many quadrupolar ordering systems, implying that the transition in YbAl3C3 is associated with the quadrupolar order.

show abstract

“…So far, few phase transition involving a magnetic ordering, multipolar one and superconducting transition have been observed in intermetallic compounds with Yb. [1][2][3] In particular, YbPd is one of the most intriguing Yb-based compounds exhibiting a very rare, still not well understood four different phase transitions as a function of temperatures at 0.5, 1.9, 105, and 125 K, evidenced by the specific heat, thermal expansion, and electrical resistivity measurements. [4] The multiple phase transition is exceptionally interesting from both technological and fundamental aspects.…”

Section: Introductionmentioning

confidence: 99%

Detailed Investigation of Elastic Properties of YbPd Single Crystal

et al. 2011

Self Cite

View full text Add to dashboard Cite

We have investigated elastic properties of the mixed-valent intermetallic compound YbPd by means of ultrasonic measurements on the single-crystals. A pronounced elastic anomaly (elastic softening) was observed at around the transition temperature T 1 ≈130 K with a significant hysteresis, being indicative of a first-order phase transition. Furthermore, it was found that the elastic anomaly showing up around T 1 was hardly affected by application of a magnetic field, suggesting the non-magnetic origin. We can analyze quantitatively the temperature dependence of all measured elastic modes C 11 and C 44 with a Jahn-Teller formula. Our findings suggest that the pronounced elastic softening toward T 1 will enable us to predict the possible charge ordering origin.

show abstract

Possible HighT_Qin YbAl₃C₃with 4f¹³System

Cited by 17 publications

References 13 publications

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

NMR Study of YbAl₃C₃in High Magnetic Field

Detailed Investigation of Elastic Properties of YbPd Single Crystal

Contact Info

Product

Resources

About

Possible HighTQin YbAl3C3with 4f13System

Cited by 17 publications

References 13 publications

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

Quasiquartet crystal-electric-field ground state with possible quadrupolar ordering in the tetragonal compoundYbRu2Ge2

NMR Study of YbAl3C3in High Magnetic Field

Detailed Investigation of Elastic Properties of YbPd Single Crystal

Contact Info

Product

Resources

About

Possible HighT_Qin YbAl₃C₃with 4f¹³System

NMR Study of YbAl₃C₃in High Magnetic Field