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The advent of novel high-entropy oxides has sparked substantial research interest due to their exceptional functional properties, which often surpass the mere sum of their constituent elements' characteristics. This study introduces a…

Strongly Correlated Electrons · Physics 2024-07-31 Neha Sharma , Nikita Sharma , Jyoti Sharma , S. D. Kaushik , Sanjoy Kr. Mahatha , Tirthankar Chakraborty , Sourav Marik

This study explores the pressure evolution of the double perovskite Ba$_2$NiTeO$_6$ by employing experimental and computational techniques. For the study of structural and vibrational properties, synchrotron X-ray diffraction (XRD) and…

The spin, charge, and lattice degrees of freedom and their interplay in high entropy oxides were intensively investigated in recent years. However, how the orbital degree of freedom is affected by the extreme disorder in high entropy oxides…

Materials Science · Physics 2024-01-17 Jiaqiang Yan , Abinash Kumar , Miaofang Chi , Matthew Brahlek , Thomas Z Ward , Michael McGuire

It is widely perceived that the correlation effect may play an important role in several unconventional superconducting families, such as cuprate, iron-based and heavy-fermion superconductors. The application of high pressure can tune the…

Superconductivity · Physics 2019-02-15 Enyu Wang , Jing Si , Xiyu Zhu , Guan-Yu Chen , Hai Lin , Hai-Hu Wen

Only few selected examples among the great diversity of anomalous rare earth skutterudite are reviewed. Focus is first given on PrFe4P12 in comparison with URu2Si2. For PrFe4P12, great progress has been made on determining the nature of the…

Strongly Correlated Electrons · Physics 2015-05-13 E. Hassinger , J. Derr , J. Levallois , D. Aoki , K. Behnia , F. Bourdarot , G. Knebel , C. Proust , J. Flouquet

CeRuPO is a rare example of a ferromagnetic (FM) Kondo-lattice system. External pressure suppresses the ordering temperature to zero at about $p_c\approx3$ GPa. Our ac-susceptibility and electrical-resistivity investigations evidence that…

Strongly Correlated Electrons · Physics 2015-04-03 E. Lengyel , M. E. Macovei , A. Jesche , C. Krellner , C. Geibel , M. Nicklas

We report a study of the high-pressure structural behavior of ZnV2O6, Zn2V2O7, and Zn3V2O8, which has been explored by means of synchrotron powder x-ray diffraction. We found that ZnV2O6 and Zn3V2O8 remain in the ambient-pressure structure…

Structural, magnetic and electrical-transport properties of {\alpha}-LiFeO2, crystallizing in the rock salt structure with random distribution of Li and Fe ions, have been studied by synchrotron X-ray diffraction, 57Fe M\"ossbauer…

Strongly Correlated Electrons · Physics 2017-09-29 Samar Layek , Eran Greenberg , Weiming Xu , Gregory Kh. Rozenberg , Moshe P. Pasternak , Jean-Paul Itié , Dániel G. Merkel

The structural behaviour of CsCdF3 under pressure is investigated by means of theory and experiment. High-pressure powder x-ray diffraction experiments were performed up to a maximum pressure of 60 GPa using synchrotron radiation. The cubic…

High-entropy spinel oxides provide an excellent platform for investigating entropy-stabilized correlated systems with strong configurational disorder. In this work, we systematically study the temperature evolution of the structural and…

We have performed $^{31}$P-NMR measurements on single-crystalline CeRuPO under pressure in order to understand the variation in magnetic character against pressure. The NMR spectra for $H \perp c$ and $H \parallel c$ at 2.15GPa split below…

Strongly Correlated Electrons · Physics 2014-10-16 Shunsaku Kitagawa , Hisashi Kotegawa , Hideki Tou , Ryota Yamauchi , Eiichi Matsuoka , Hitoshi Sugawara

Aliovalent rare earth substitution into the alkaline earth site of CaFe2As2 single-crystals is used to fine-tune structural, magnetic and electronic properties of this iron-based superconducting system. Neutron and single crystal x-ray…

Superconductivity · Physics 2015-03-19 S. R. Saha , N. P. Butch , T. Drye , J. Magill , S. Ziemak , K. Kirshenbaum , P. Y. Zavalij , J. W. Lynn , J. Paglione

Unlike the ferropnictide superconductors, which crystallize in a tetragonal crystal structure, binary FeAs forms in an orthorhombic crystal structure, where the local atomic environment resembles a highly distorted variant of the FeAs4…

Other Condensed Matter · Physics 2015-03-17 J. R. Jeffries , N. P. Butch , H. Cynn , S. R. Saha , K. Kirshenbaum , S. T. Weir , Y. K. Vohra , J. Paglione

Detailed investigations of structural, magnetic and electronic transport properties of hole-doped high-entropy rare-earth manganites are presented. The high-entropy samples (LaNdPrSmEu)$_{1-x}$Sr$_x$MnO$_3$ (0$\leq$\textit{x}$\leq$0.5),…

Strongly Correlated Electrons · Physics 2023-03-07 Ashutosh Kumar , David Bérardan , Diana Dragoe , Eric Riviere , Tomohiro Takayama , Hidenori Takagi , Nita Dragoe

The structural properties under hydrostatic pressure up to 3 GPa of the layered rare earth carbide halide superconductor Y2C2I2 are studied by neutron powder diffraction at room temperature. The compressibilities are anisotropic, such that…

In situ high pressure XRD diffraction and Raman spectroscopy have been performed on 12 nm CeO2 nanoparticles. Surprisingly, under quasihydrostatic condition, 12 nm CeO2 nanoparticles maintain the fluorite-type structure in the whole…

Materials Science · Physics 2015-06-15 Bo Liu , Ran Liu , Quan-Jun Li , Ming-Guang Yao , Bo Zou , Tian Cui , Bing-Bing Liu

The effects of high pressure on the crystal structure of orthorhombic (Pnma) perovskite type cerium scandate have been studied in situ under high pressure by means of synchrotron x-ray powder diffraction, using a diamond anvil cell. We have…

The effect of pressure on the structural and vibrational properties of the layered molecular crystal 1,1-diamino-2,2-dinitroethelene (FOX-7) are explored by first principles calculations. We observe significant changes in the calculated…

Materials Science · Physics 2014-02-18 S. Appalakondaiah , G. Vaitheeswaran , S. Lebègue

We have synthesized oxygen-deficient fluorine-doped samples of nominal composition PrFeAsO$_{1-x}$F$_y$ to study the normal and superconducting state properties. Resistivity of undoped PrFeAsO exhibits a strong anomaly at around 155 K due…

Superconductivity · Physics 2009-11-13 D. Bhoi , P. Mandal , P. Choudhury

On experimental side, BaFe$_2$As$_2$ without doping has been made superconducting by applying appropriate pressure (2-6 GPa). Here, we use a full-potential linearized augmented plane wave method within the density-functional theory to…

Superconductivity · Physics 2009-04-08 Wenhui Xie , Mingli Bao , Zhenjie Zhao , Bang-Gui Liu