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Related papers: Titanium pyrochlore magnets: how much can be learn…

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Magnetic and magnetoelastic properties of terbium titanate pyrochlore in paramagnetic phase are simulated. The magnetic field and temperature dependences of magnetization and forced magnetostriction in Tb2Ti2O7 single crystals and…

Strongly Correlated Electrons · Physics 2011-10-27 V. V. Klekovkina , A. R. Zakirov , B. Z. Malkin , L. A. Kasatkina

The successive phase transitions of the pyrochlore oxide Cd2Re2O7 are studied by polarizing microscopy and magnetic susceptibility measurements. The formation of twin domains is visualized in the polarizing images of a pristine (111)…

Superconductivity · Physics 2018-10-02 Yasuhito Matsubayashi , Daigorou Hirai , Masashi Tokunaga , Zenji Hiroi

By combining neutron scattering and magnetization measurements down to 80 mK, we determine the $(H,T)$ phase diagram of the Nd$_2$(Zr$_{1-x}$Ti$_x$)$_2$O$_7$ pyrochlore magnet compounds. In those samples, Zr is partially substituted by Ti,…

Strongly Correlated Electrons · Physics 2021-07-07 M. Léger , E. Lhotel , E. Ressouche , K. Beauvois , F. Damay , C. Paulsen , A. Al-Mawla , E. Suard , M. Ciomaga Hatnean , G. Balakrishnan , S. Petit

The very low temperature properties of two pyrochlore compounds, Yb2Ti2O7 and Gd2Sn2O7, were investigated using an ensemble of microscopic and bulk techniques. In both compounds, a first order transition is evidenced, as well as spin…

The low temperature magnetic properties of pyrochlore compound Dy2Ti2O7 in magnetic fields applied along the [111] direction are reported. Below 1 K, a clear plateau has been observed in the magnetization process in the field range 2~9 kOe,…

Materials Science · Physics 2009-11-07 Kazuyuki Matsuhira , Zenji Hiroi , Takashi Tayama , Seishi Takagi , Toshiro Sakakibara

The intrinsic noncollinear spin patterns in rare-earth pyrochlore are physically interesting, hosting many emergent properties, e.g. spin ice and monopole-type excitation. Recently, the magnetic monopole excitation of spin ice systems was…

Materials Science · Physics 2015-12-18 Lin Lin , Y. L. Xie , J. -J. Wen , Shuai Dong , Z. B. Yan , J. -M. Liu

Neutron powder diffraction and inelastic measurements were performed examining the 5d pyrochlore Y$_2$Ir$_2$O$_7$. Temperature dependent measurements were performed between 3.4 K and 290 K, spanning the magnetic transition at 155 K. No sign…

Strongly Correlated Electrons · Physics 2014-05-30 M. C. Shapiro , S. C. Riggs , M. B. Stone , C. R. de la Cruz , S. Chi , A. A. Podlesnyak , I. R. Fisher

Muon spin relaxation measurements on Bi2Ir2O7 show that it undergoes a bulk magnetic transition at 1.84(3) K. This is accompanied by increases in the muon spin relaxation rate and the amplitude of the non-relaxing part of the signal. The…

Strongly Correlated Electrons · Physics 2013-06-13 P. J. Baker , J. S. Moeller , F. L. Pratt , W. Hayes , S. J. Blundell , T. Lancaster , T. F. Qi , G. Cao

We explore the magnetic properties of Nd$_2$Zr$_2$O$_7$ and Pr$_2$Zr$_2$O$_7$ single crystals subjected to pulsed magnetic fields up to 60 T using magnetization and magnetocaloric-effect (MCE) measurements, with initial temperatures ranging…

The spin ice system Dy$_{2}$Ti$_{2}$O$_{7}$ exhibits strong frequency-dependent spin-freezing at $\sim$ 16 K temperature. Although it has been a matter of discussion for years, the origin of this unusual spin freezing is still unknown. The…

Strongly Correlated Electrons · Physics 2022-04-06 Sheetal , C. S. Yadav

The magnetization process of the breathing pyrochlore magnet CuInCr4S8 has been investigated in ultra-high magnetic fields up to 150 T. Successive phase transitions characterized with a substantially wide 1/2-plateau from 55 T to 110 T are…

Strongly Correlated Electrons · Physics 2020-03-04 Masaki Gen , Yoshihiko Okamoto , Masaki Mori , Koshi Takenaka , Yoshimitsu Kohama

An adiabatic demagnetization process is studied in Gd2Ti2O7, a geometrically frustrated antiferromagnet on a pyrochlore lattice. In contrast to conventional paramagnetic salts, this compound can exhibit a temperature decrease by a factor of…

Strongly Correlated Electrons · Physics 2007-05-23 S. S. Sosin , L. A. Prozorova , A. I. Smirnov , A. I. Golov , I. B. Berkutov , O. A. Petrenko , G. Balakrishnan , M. E. Zhitomirsky

The magnetization processes of the spin-3/2 antiferromagnet LiInCr4O8 comprising a "breathing" pyrochlore lattice, which is an alternating array of small and large tetrahedra, are studied under ultrahigh magnetic fields of up to 130 T using…

Temperature and magnetic field dependent magnetization and extraction of entanglement from the experimental data is reported for dichloro(thiazole)copper(II), a Heisenberg spin chain system. The magnetic susceptibility vs. temperature plot…

Strongly Correlated Electrons · Physics 2014-03-18 Tanmoy Chakraborty , Harkirat Singh , Diptaranjan Das , Tamal K. Sen , Swadhin K. Mandal , Chiranjib Mitra

We report an extensive study on the zero field ground state of a powder sample of the pyrochlore $\mathrm{Yb_2Ti_2O_7}$. A sharp heat capacity anomaly that labels a low temperature phase transition in this material is observed at 280 mK.…

Single crystals of a novel ruthenate, Ca2Ru2O7, were obtained. An X-ray diffraction study on a single crystal revealed that this material crystallizes in a pyrochlore structure with a lattice parameter, a = 10.197 Angstroms. The magnetic…

Materials Science · Physics 2009-11-11 Taiya Munenaka , Hirohiko Sato

The spin-liquid phase of two highly frustrated pyrochlore magnets Gd2Ti2O7 and Gd2Sn2O7 is probed using electron spin resonance in the temperature range 1.3 - 30 K. The deviation of the absorption line from the paramagnetic position \nu…

Strongly Correlated Electrons · Physics 2013-05-29 S. S. Sosin , L. A. Prozorova , A. I. Smirnov , P. Bonville , G. Jasmin - Le Bras , O. A. Petrenko

We report the growth of large high quality crystals of the frustrated magnet, Pr2Zr2O7 by the floating zone technique. Several crystals have been produced starting with varying levels of excess of Pr6O11 to compensate for the loss of Pr2O3…

Materials Science · Physics 2016-11-09 M. Ciomaga Hatnean , C. Decorse , M. R. Lees , O. A. Petrenko , D. S. Keeble , G. Balakrishnan

The thermodynamic properties of the pyrochlore Yb2Ti2O7 material are calculated using the numericallinked-cluster (NLC) calculation method for an effective anisotropic-exchange spin-1/2 Hamiltonian with parameters recently determined by…

Strongly Correlated Electrons · Physics 2014-04-11 N. R. Hayre , K. A. Ross , R. Applegate , T. Lin , R. R. P. Singh B. D. Gaulin , M. J. P. Gingras

The pyrochlore magnet Tb$_{2}$Ti$_{2}$O$_{7}$ shows a lack of magnetic order to low temperatures and is considered to be a quantum spin liquid candidate. We perform time-domain THz spectroscopy on high quality Tb$_{2}$Ti$_{2}$O$_{7}$…

Strongly Correlated Electrons · Physics 2021-04-21 Xinshu Zhang , Yi Luo , T. Halloran , J. Gaudet , Huiyuan Man , S. M. Koohpayeh , N. P. Armitage