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We report study of magnetization, resistivity, magnetoresistance and specific heat of the pyrochlore Iridate (Eu1-xNdx)2Ir2O7 with x=0.0, 0.5 and 1.0, where spin orbit coupling, electronic correlation, magnetic frustration and Kondo…

Strongly Correlated Electrons · Physics 2020-12-02 Sampad Mondal , M. Modak , B. Maji , M. K. Ray , S. Mandal , Swapan K. Mandal , M. Sardar , S. Banerjee

The low-temperature thermodynamic properties of the frustrated pyrochlore Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ have been studied using the single crystal of $x=0.005$ sitting in a long range ordered phase in the $x$-$T$ phase diagram. We observed…

Strongly Correlated Electrons · Physics 2017-04-25 H. Takatsu , T. Taniguchi , S. Kittaka , T. Sakakibara , H. Kadowaki

In this report, we investigated a new rare earth based one-dimensional Ising spin chain magnet~\DNG~by means of magnetization, specific heat and powder neutron diffraction measurements. Due to the crystalline electrical field splitting, the…

Strongly Correlated Electrons · Physics 2023-03-16 H. Ge , L. Zhang , N. Zhao , J. Yang , L. Wang , L. Zhou , Y. Fu , T. T. Li , Z. M. Song , F. Ding , J. B. Xu , Y. F. Zhang , S. M. Wang , J. W. Mei , X. Tong , P. Miao , H. He , Q. Zhanghang , L. S. Wu , J. M. Sheng

We have investigated the structural, electronic, and magnetic properties of the pyrochlore iridates Eu2Ir2O7 and Pr2Ir2O7 using a combination of resonant elastic x-ray scattering, x-ray powder diffraction, and resonant inelastic x-ray…

We have studied the field and temperature dependence of the magnetization of single crystals of Sr3NiIrO6. These measurements evidence the presence of an easy axis of anisotropy and two anomalies in the magnetic susceptibility. Neutron…

We present polarised-neutron diffraction measurements of the Ising-like spin-chain compound Ca3Co2O6 above and below the magnetic ordering temperature TN. Below TN, a clear evolution from a single-phase spin-density wave (SDW) structure to…

The pyrochlore magnet $\rm Yb_2Ti_2O_7$ has been proposed as a quantum spin ice candidate, a spin liquid state expected to display emergent quantum electrodynamics with gauge photons among its elementary excitations. However, $\rm…

Strongly Correlated Electrons · Physics 2018-06-20 Gabriele Sala , Dalini D. Maharaj , Matthew B. Stone , Hanna A. Dabkowska , Bruce D. Gaulin

Rare-earth pyrochlores are known to exhibit exotic magnetic phenomena. We report a study of crystal growth and characterizations of a new rare-earth compound Er$_2$AlSbO$_7$, in which Al$^{3+}$ and Sb$^{5+}$ ions share the same positions…

Quasielastic neutron scattering has been utilized to investigate the Griffiths phase induced by an axial magnetic field in FeCl2 at temperatures Tc(H)<=T<=TN, where Tc(H) is the transition temperature in an external magnetic field H. We…

Statistical Mechanics · Physics 2009-10-31 Ch. Binek , D. Bertrand , L. P. Regnault , W. Kleemann

We have studied the low energy spin dynamics between 4.6K and 0.07K in a Tb2Ti2O7 single crystal sample, by means of inelastic neutron scattering experiments. The spectra consist in a dual response, with a static and an inelastic…

Strongly Correlated Electrons · Physics 2015-06-11 Sylvain Petit , Pierre Bonville , Julien Robert , Claudia Decorse , Isabelle Mirebeau

We report a quasi-one-dimensional S = 1 spin chain compound BaNiTe2O7. This magnetic system has been investigated by magnetic susceptibility, specific heat, and neutron powder diffraction. These results indicate that BaNiTe2O7 develops a…

We report on the CrFeTi$_2$O$_7$ (CFTO) system using a combination of x-ray diffraction, dc magnetization, ac susceptibility, specific heat and neutron diffraction measurements. CFTO is seen to crystallize in a monoclinic $P21/a$ symmetry.…

Strongly Correlated Electrons · Physics 2024-01-17 Arun Kumar , Soumendra Nath Panja , Lukas Keller , Sunil Nair

The breathing pyrochlore lattice material Ba$_3$Yb$_2$Zn$_5$O$_{11}$ exists in the nearly decoupled limit, in contrast to most other well-studied breathing pyrochlore compounds. As a result, it constitutes a useful platform to benchmark…

The insulating pyrochlore compound Nd2Sn2O7 has been shown to undergo a second order magnetic phase transition at Tc ~ 0.91 K to a noncoplanar all-in--all-out magnetic structure of the Nd3+ magnetic moments. An anomalously slow paramagnetic…

Strongly Correlated Electrons · Physics 2017-05-04 P. Dalmas de Reotier , A. Yaouanc , A. Maisuradze , A. Bertin , P. J. Baker , A. D. Hillier , A. Forget

Low-temperature states of polycrystalline samples of a frustrated pyrochlore oxide Tb$_{2+x}$Ti$_{2-x}$O$_{7+y}$ have been investigated by specific heat, magnetic susceptibility, and neutron scattering experiments. We have found that this…

We report measurements of the neutron diffuse scattering in a single crystal of the relaxor ferroelectric material 95.5%Pb(Zn1/3Nb2/3)O3-4.5%PbTiO3 (PZN-4.5%PT). We show that the diffuse scattering at high temperatures has a quasielastic…

Materials Science · Physics 2013-01-10 Zhijun Xu , Jinsheng Wen , E. Mamontov , C. Stock , P. M. Gehring , Guangyong Xu

In this work we present a neutron Larmor diffraction study of the rare earth pyrochlores $R_2$Ti$_2$O$_7$, with $R$ = Tb, Dy, Ho. We measured the temperature dependence of the lattice parameter with precision $10^{-5}$, between 0.5 K and…

Strongly Correlated Electrons · Physics 2016-11-09 M Ruminy , F Groitl , T Keller , T Fennell

As a simple cubic system with only one f electron per cerium ion, CeB6 is of model character to investigate the interplay of orbital phenomena with magnetism. It is also a textbook example of a compound that exhibits magnetically hidden…

Strongly Correlated Electrons · Physics 2021-08-13 P. Y. Portnichenko , A. S. Cameron , D. S. Inosov

Neutron scattering has been used to study the nature of the ferromagnetic transition in single crystals of La_0.7Ca_0.3MnO_3 and La_0.8Ca_0.2MnO_3, and polycrystalline samples of La_0.67Ca_0.33MnO_3 and La_5/8Ca_3/8MnO_3 where the naturally…

Strongly Correlated Electrons · Physics 2009-11-10 C. P. Adams , J. W. Lynn , V. N. Smolyaninova , A. Biswas , R. L. Greene , W. Ratcliff , S-W. Cheong , Y. M. Mukovskii , D. A. Shulyatev

The stretched diamond lattice material LiYbO2 has recently been reported to exhibit two magnetic transitions ($T_{N1} = 1.1 K$, $T_{N2} = 0.45 K$) via specific heat, magnetization, and neutron scattering measurements [Bordelon et al., Phys.…

Strongly Correlated Electrons · Physics 2022-10-19 Eric M. Kenney , Mitchell M. Bordelon , Chennan Wang , Hubertus Luetkens , Stephen D. Wilson , Michael J. Graf