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We present a combined study of zero-field $^{51}$V and $^{127}$I NMR at ambient pressure and specific heat and magnetization measurements under pressure up to 2.08 GPa on bulk single crystals of the van-der-Waals ferromagnet VI$_3$. At…

Strongly Correlated Electrons · Physics 2019-11-21 Elena Gati , Yuji Inagaki , Tai Kong , Robert J. Cava , Yuji Furukawa , Paul C. Canfield , Sergey L. Bud'ko

We present a study of the effect of very high pressure on the orthorhombic perovskite GdMnO3 by Raman spectroscopy and synchrotron x-ray diffraction up to 53.2 GPa. The experimental results yield a structural and insulator-to-metal phase…

Strongly Correlated Electrons · Physics 2011-11-22 J. Agostinho Moreira , A. Almeida , J. Oliveira , V. H. Rodrigues , M. M. R. Costa , P. B. Tavares , P. Bouvier , M. Guennou , J. Kreisel

Magnetometry, electrical transport, and neutron scattering measurements were performed on single crystals of the Fe^{4+}-containing perovskite-related phase Sr_3Fe_2O_7-x as a function of oxygen content. Although both the crystal structure…

Strongly Correlated Electrons · Physics 2013-06-12 D. C. Peets , J. -H. Kim , P. Dosanjh , M. Reehuis , A. Maljuk , N. Aliouane , C. Ulrich , B. Keimer

Single-crystalline ferroelectric (FE) perovskites show a large electrocaloric effect at electric field-induced phase transitions, promising for solid-state cooling technologies. However, paraelectric-FE transition temperatures are often too…

Materials Science · Physics 2024-10-03 Lan-Tien Hsu , Frank Wendler , Anna Grünebohm

Using polarization-resolved Raman spectroscopy, we investigate layer number, temperature, and magnetic field dependence of Raman spectra in one- to four-layer $\mathrm{CrI_{3}}$. Layer-number-dependent Raman spectra show that in the…

We report a comprehensive investigation of the triple perovskite iridate Ba$_{3}$CoIr$_{2}$O$_{9}$. Stabilizing in the hexagonal $P6_{3}/mmc$ symmetry at room temperature, this system transforms to a monoclinic $C2/c$ symmetry at the…

Strongly Correlated Electrons · Physics 2021-02-03 Charu Garg , Deepak Roy , Martin Lonsky , Pascal Manuel , Antonio Cervellino , Jens Müller , Mukul Kabir , Sunil Nair

The theoretical description of the anomalous ferroelectric, ferromagnetic and magnetoelectric properties of Pb(Fe1/2Ta1/2)x(Zr0.53Ti0.47)1-xO3 and Pb(Fe1/2Nb1/2)x(Zr0.53Ti0.47)1-xO3 micro-ceramics is given. We performed calculations of…

Materials Science · Physics 2016-02-17 Maya D. Glinchuk , Eugene A. Eliseev , Anna N. Morozovska

We report the results of Hall coefficient R_H and magnetoresistance (MR) measurements on single crystalline samples of Sr3Ru2O7 grown by the floating zone method. R_H was found to be positive over the entire temperature range studied (0.3 -…

Strongly Correlated Electrons · Physics 2010-10-11 Y. Liu , R. Jin , Z. Q. Mao , K. D. Nelson , M. K. Haas , R. J. Cava

The 5$d$ based SrIrO$_3$ represents prototype example of nonmagnetic correlated metal which mainly originates from a combined effect of spin-orbit coupling, lattice dimensionality and crystal structure. Therefore, tuning of these parameters…

Strongly Correlated Electrons · Physics 2021-02-24 Rachna Chaurasia , K. Asokan , Kranti Kumar , A. K. Pramanik

We investigate the temperature dependence of the resistivity and magnetoresistance of a polycrystalline $Sr_2CoMoO_{6-\delta}$ film deposited on (100)-$SrTiO_3$ substrate prepared by the pulsed laser deposition method. X-ray diffraction,…

Materials Science · Physics 2007-05-23 C. L. Yuan , Z. Y. Zeng , Y. Zhu , P. P. Ong , Z. X. Shen , C. K. Ong

To broaden the scope of van der Waals 2D magnets, we report the synthesis and magnetism of covalent 2D magnetic Cr$_2$Te$_3$ with a thickness down to one-unit-cell. The 2D Cr$_2$Te$_3$ crystals exhibit robust ferromagnetism with a Curie…

Sol-gel deposited (010) textured polycrystalline thin films of gallium ferrite (GaFeO3 or GFO) on n-Si(100) and Pt/Si(111) substrates are characterized for room temperature multiferroism. Structural characterization using X-ray diffraction…

Materials Science · Physics 2016-11-04 Monali Mishra , Amritendu Roy , Ashish Garg , Rajeev Gupta , Somdutta Mukherjee

Proximity to phase transitions (PTs) is frequently responsible for the largest dielectric susceptibilities in ferroelectrics. The impracticality of using temperature as a control parameter to reach those large responses has motivated the…

The 5d-electron based BaIrO3 is a nonmetallic weak ferromagnet with a Curie temperature at Tc=175 K. Its largely extended orbitals generate strong electron-lattice coupling, and magnetism and electronic structure are thus critically linked…

Strongly Correlated Electrons · Physics 2009-11-10 G. Cao , X. N. Lin , S. Chikara , V. Durairaj , E. Elhami

The structural evolution of a polydomain ferroelectric Pb(Zr0.2Ti0.8)O3 film was studied by temperature dependent X-ray diffraction. Two critical temperatures were evidenced: T*=740K, corresponding to a change in the domain structure…

$\mathrm{Cu_2IrO_3}$ is among the newest layered honeycomb iridates and a promising candidate to harbor a Kitaev quantum spin liquid state. Here, we investigate the pressure and temperature dependence of its structure through a combination…

Strongly Correlated Electrons · Physics 2021-07-14 G. Fabbris , A. Thorn , W. Bi , M. Abramchuk , F. Bahrami , J. H. Kim , T. Shinmei , T. Irifune , F. Tafti , A. N. Kolmogorov , D. Haskel

To explore the possibility of quantum phase transitions and even quantum criticality in LaCrSb$_3$ based compounds, we performed measurements under pressure as well as a vanadium substitution study. The Curie temperature of LaCrSb$_3$ was…

Materials Science · Physics 2015-06-17 Xiao Lin , Valentin Taufour , Sergey L. Bud'ko , Paul C. Canfield

Geometrical frustration and spin-orbit coupling effect together play vital role to influence properties in pyrochlore based iridium oxides. Here we have investigated detailed structural, magnetic, thermodynamic and transport properties of…

Strongly Correlated Electrons · Physics 2017-02-06 Harish Kumar , A. K. Pramanik

BiFeO3 is the most famous multiferroic material, but its G-type antiferromagnetism is highly desirable to be replaced by strong macroscopic magnetism beyond room temperature. Here we obtain double perovskite Bi2FeMoO6 with R3 (#146) space…

Materials Science · Physics 2014-10-20 Peng Chen , Bang-Gui Liu

Measurements of the resistive properties and the lattice parameters of a (LaVO3)[6 unit cells]/(SrVO3)[1 unit cell] superlattice between 10K and room temperature are presented. A low temperature metallic phase compatible with a Fermi liquid…

Strongly Correlated Electrons · Physics 2015-05-28 A. David , R. Frésard , Ph. Boullay , W. Prellier , U. Lüders , P. -E. Janolin