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SrTi0.5Mn0.5O3 (STMO) is a chemically disordered perovskite having random distribution of Ti and Mn over 1b site. Striking discrepancies about the structural and magnetic properties of STMO demands detailed analysis which is addressed. To…

We report the results of dc and ac magnetization measurements as a function of temperature (1.8 - 300 K) for the spin chain compound, Ca$_3$CoRhO$_6$, which has been recently reported to exhibit a partially disordered antiferromagnetic…

Strongly Correlated Electrons · Physics 2009-11-07 E. V. Sampathkumaran , Asad Niazi

We have studied the low-temperature behavior of the magnetization and the specific heat of the bilayered perovskite system $% La_{2-2x}Sr_{1+2x}Mn_{2}O_{7}$, for $0.30\leq x\leq 0.50$. Our analysis reveals that below 30 K the temperature…

Materials Science · Physics 2009-11-07 H. Martinho , C. Rettori , D. L. Huber , S. B. Oseroff , J. F. Mitchell

The pyrochlore insulator Yb2Ti2O7 has attracted the attention of experimentalists and theoreticians alike for about 15 years. Conflicting neutron diffraction data on the possible existence of magnetic Bragg reflections at low temperature…

Strongly Correlated Electrons · Physics 2016-08-26 A. Yaouanc , P. Dalmas de Reotier , L. Keller , B. Roessli , A. Forget

We study the low-temperature physics of the $SU(2)$-symmetric spin-$1/2$ Heisenberg antiferromagnet on a pyrochlore lattice and find fingerprint evidence for the thermal spin-ice state in this frustrated quantum magnet. Our conclusions are…

Strongly Correlated Electrons · Physics 2016-05-04 Yuan Huang , Kun Chen , Youjin Deng , Nikolay Prokof'ev , Boris Svistunov

We report the properties of a triangular lattice iron-chalcogenide antiferromagnet FeAl$_{2}$Se$_{4}$. The spin susceptibility reveals a significant antiferromagnetic interaction with a Curie-Weiss temperature {\Theta}$_{CW}$ ~ -200K and a…

Strongly Correlated Electrons · Physics 2019-02-27 Kunkun Li , Shifeng Jin , Jiangang Guo , Yanping Xu , Yixi Su , Erxi Feng , Yu Liu , Shengqiang Zhou , Tianping Ying , Shiyan Li , Ziqiang Wang , Gang Chen , Xiaolong Chen

Experimental data of the frequency-dependent ac susceptibility for the dipolar spin ice Dy2Ti2O7 has been analyzed by Monte Carlo simulations on the basis of the single-spin-flip Metropolis algorithm. We have directly evaluated the ac…

Strongly Correlated Electrons · Physics 2013-10-15 Hiroshi Takatsu , Kazuki Goto , Hiromi Otsuka , Ryuji Higashinaka , Kazuyuki Matsubayashi , Yoshiya Uwatoko , Hiroaki Kadowaki

We have performed a detailed transverse magnetization study of the pyrochlore antiferromagnet Gd2Ti2O7. A transverse magnetization of about 10^{-3}M_{sat} is observed in the low-temperature ordered phases. These measurements result in the…

Strongly Correlated Electrons · Physics 2009-11-11 V. N. Glazkov , C. Marin , J. -P. Sanchez

We investigate the non-equilibrium behavior of the spin-ice material Dy$_2$Ti$_2$O$_7$ by studying its magnetization as a function of the rate at which an external field is swept. At temperatures below the enigmatic "freezing" temperature…

Materials Science · Physics 2011-01-13 D. Slobinsky , C. Castelnovo , R. A. Borzi , A. S. Gibbs , A. P. Mackenzie , R. Moessner , S. A. Grigera

We present new high resolution inelastic neutron scattering data on the candidate spin liquid Tb2Ti2O7. We find that there is no evidence for a zero field splitting of the ground state doublet within the 0.2 K resolution of the instrument.…

Disordered Systems and Neural Networks · Physics 2012-10-11 B. D. Gaulin , J. S. Gardner , P. A. McClarty , M. J. P. Gingras

We report the magneto-dielectric response of single crystals of the spin-ice compound Dy2Ti2O7 down to 0.26 K. The dielectric constant under zero magnetic field exhibits a clear decrease reflecting the development of the local two-spins-in,…

Strongly Correlated Electrons · Physics 2009-11-11 Masafumi Saito , Ryuji Higashinaka , Yoshiteru Maeno

In this work we study the interplay between the crystal structure and magnetism of the pyroarsenate \alpha-Cu_2As_2O_7 by means of magnetization, heat capacity, electron spin resonance and nuclear magnetic resonance measurements as well as…

We used a local susceptibility approach in extensive polarized neutron diffraction studies of the spin liquid \tbti. For a magnetic field applied along the [110] and [111] directions, we found that, at high temperature, all Tb moments are…

Strongly Correlated Electrons · Physics 2015-05-13 Arsen Gukasov , Huibo Cao , Isabelle Mirebeau , Pierre Bonville

A series of four sigma-Fe(100-x)Mo(x) samples was investigated with ac magnetic susceptibility measurements. An evidence was found that the ground magnetic state of the samples is constituted by a spin glass (SG) with the spin glass…

Strongly Correlated Electrons · Physics 2015-01-29 J. Przewoznik , S. M. Dubiel

Pyrochlore materials are characterized by their hallmark network of corner-sharing rare-earth tetrahedra, which can produce a wide array of complex magnetic ground states. Ferromagnetic Ising pyrochlores often obey the "two-in-two-out" spin…

The XY pyrochlore Yb$_2$Ti$_2$O$_7$, with pseudo spin 1/2 at the Yb$^{3+}$ site, has been celebrated as potential host for the quantum spin ice state. The substitution of non-magnetic Ti with Pt gives Yb$_2$Pt$_2$O$_7$, a system with…

Strongly Correlated Electrons · Physics 2018-10-03 S. K. Takahashi , A. Arsenault , C. Mauws , A. M. Hallas , C. Sarkis , K. A. Ross , C. R. Wiebe , M. Tachibana , G. M. Luke , T. Imai

Precise magnetic hysteresis measurements of small single crystals of Mn$_{12}$ acetate of spin 10 have been conducted down to 0.4 K using a high sensitivity Hall magnetometer. At higher temperature (>1.6K) step-like changes in magnetization…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Andrew D. Kent , Yicheng Zhong , Louisa Bokacheva , Daniel Ruiz , David N. Hendrickson , M. P. Sarachik

The temperature dependence of magnetic susceptibility of the Bi$_{2-y}$Sr$_{y}$Ir$_{2}$O$_{7}$ system was studied from 2 to 300 K. According to these measurements, the solid solution $(0\leq y\leq 0.9)$ does not show any magnetic…

Materials Science · Physics 2015-06-12 C. Cosio-Castaneda , P. de la Mora , F. Morales , R. Escudero , G. Tavizon

$\beta$-YbAlB$_4$ is the first Yb-based heavy fermion superconductor with $T_{\rm c} = 80$ mK. We measured low temperature magnetization of high-purity single crystals down to $T=$ 25 mK. The measurements have revealed a considerable amount…

Strongly Correlated Electrons · Physics 2015-10-28 Y. Matsumoto , K. Kuga , Y. Karaki , T. Tomita , S. Nakatsuji

High-quality KFe2As2 (K122) single crystals synthesized by different techniques have been studied by magnetization and specific heat (SH) measurements. There are 2 types of samples both affected by disordered magnetic phases: (i)…