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Ruthenates provide comprehensive platform to study a plethora of novel properties, such as quantum magnetism, superconductivity and magnetic fluctuation mediated metal-insulator transition. In this article, we provide an overview of quantum…

Strongly Correlated Electrons · Physics 2022-04-27 Deepak K. Singh , Arthur Ernst , Vitalii Dugaev , Yiyao Chen , Jagath Gunasekera

The d.c. magnetization and magnetic relaxation studies of the calcium doped samples, Y0.95Ca0.05BaCo2O5.5 and YBa0.95Ca0.05Co2O5.5, show the existence of a magnetic glass like behaviour in the family of cobaltites for the first time. Our…

Materials Science · Physics 2012-11-09 Tapati Sarkar , V. Pralong , B. Raveau

The mixed-valent multiferroic compound CaMn7O12 is studied for its magnetic and electric properties. The compound undergoes magnetic ordering below 90 K with a helimagnetic structure followed by a low temperature magnetic anomaly observed…

Strongly Correlated Electrons · Physics 2013-07-23 J. Sannigrahi , S. Chattopadhyay , D. Dutta , S. Giri , S. Majumdar

We report the effects of cobalt doping on the magnetic properties of two-dimensional van der Waals ferromagnet Fe3GeTe2. Single crystals of (Fe{1-x}Cox)3GeTe2 with x=0-0.78 were successfully synthesized and characterized with x-ray…

Materials Science · Physics 2020-03-06 Cong-Kuan Tian , Cong Wang , Wei Ji , Jin-Chen Wang , Tian-Long Xia , Le Wang , Juan-Juan Liu , Hong-Xia Zhang , Peng Cheng

The structural and magnetic properties of two mixed-valence cobaltites with formal population of 0.30 Co$^{4+}$ ions per f.u., (Pr$_{1-y}$Y$_{y}$)$_{0.7}$Ca$_{0.3}$CoO$_3$ ($y=0$ and 0.15), have been studied down to very low temperatures by…

Materials Science · Physics 2015-06-17 K. Knizek , J. Hejtmanek , M. Marysko , P. Novak , E. Santava , Z. Jirak , T. Naito , H. Fujishiro , C. R. dela Cruz

We report the effects of Al-doping on the structure and magnetic properties in CaBa(Co$_{1-x}$Al$_{x}$)$_4$O$_7$ (0$\leq$x$\leq$0.25). The system exhibits a structural transition from an orthorhombic symmetry to a hexagonal symmetry when…

Materials Science · Physics 2013-04-05 Youming Zou , Zhe Qu , Lei Zhang , Wei Ning , Langsheng Ling , Li Pi , Yuheng Zhang

The discovery of superconductivity in copper oxide compounds has attracted considerable attention over the past three decades. The high transition temperature in these compounds, exhibiting proximity to an antiferromagnetic order in their…

Within the BaFe2As2 crystal lattice, we partially substitute thallium for barium and report the effects of interlayer coupling in Ba1-xTlxFe2As2 crystals. We demonstrate the unusual effects of magneto-elastic coupling and charge doping in…

Superconductivity · Physics 2016-11-11 A. S. Sefat , L. Li , H. B. Cao , M. A. McGuire , B. Sales , R. Custelcean , D. S. Parker

Pyrochlore iridates have recently attracted growing interest in condensed matter physics because of their potential for realizing new topological states. In order to achieve such quantum states, it is essential to understand themagnetic…

Strongly Correlated Electrons · Physics 2015-01-06 W. K. Zhu , M. Wang , B. Seradjeh , Fengyuan Yang , S. X. Zhang

The potential applications of dilute magnetic oxides (DMOs) in magneto-optic and spintronic devices have attracted significant attention, although understanding their magnetic behavior is complex due to intricate interactions of intrinsic…

Materials Science · Physics 2025-02-13 Hemant Arora , Atul Bandyopadhyay , Arup Samanta

Magnetic properties of DyAl$_{0.926}$Cr$_{0.074}$O$_3$ and DyAlO$_3$ were studied. We found that both compounds are antiferromagnetic with a low N\'eel transition temperature. At higher temperatures the magnetic characteristics show a…

Materials Science · Physics 2013-06-20 R. Escudero , B. L. Ruiz-Herrera , M. P. Jimenez , F. Morales

The nature of low-impurity ferromagnetism remains a challenging problem in the solid-state community. Despite initial experiments dating back to the mid-20th century, a comprehensive theoretical explanation and reliable ab initio…

The effect of electron doping on the magnetic properties of the Brownmillerite-type bilayered compounds has been investigated by neutron powder diffraction in La substituted Ca2.5-xLaxSr0.5GaMn2O8 compounds (x = 0.05 and 0.1), in comparison…

Strongly Correlated Electrons · Physics 2012-05-18 A. K. Bera , S. M. Yusuf , I. Mirebeau

Magnetic doping with transition metal ions is the most widely used approach to break timereversal symmetry in a topological insulator, a prerequisite for unlocking the TIs exotic potential. Recently, we reported the doping of Bi2Te3 thin…

We have explored, computationally and experimentally, the magnetic properties of \fecob{} alloys. Calculations provide a good agreement with experiment in terms of the saturation magnetization and the magnetocrystalline anisotropy energy…

Structure, transport and magnetic properties have been investigated for layered NaCo1-xMnxO2 materials. With the increase of Mn-doping amount, measurements of x-ray diffraction indicate that the in-plane lattice parameter a decreases…

Strongly Correlated Electrons · Physics 2007-05-23 W. Y. Zhang , H. C. Yu , Y. G. Zhao , X. P. Zhang , Y. G. Shi , Z. H. Cheng , J. Q. Li

We synthesized bismuth - cobalt oxide doped by erbium with general formula Bi3-xErxCoO3-y. Compound has structure of delta-form bismuth oxide. Magnetic properties of the compound were measured by Faraday's method using quartz scales in the…

Materials Science · Physics 2015-12-08 N. I. Matskevich , E. V. Korotaev

We report systematic studies of AC magnetic susceptibility and transport properties of Y(1-x)Ca(x)Ba2Cu3Oz bulk samples with 0\leq x\leq 0.4. Single phase materials, reduction of carrier concentration and decrease of Tc to 85 K were…

Superconductivity · Physics 2015-06-24 E. K. Nazarova , A. J. Zaleski , A. L. Zahariev , A. K. Stoyanova-Ivanova , K. N. Zalamova

This work demonstrates strong coupling regime between an Erbium ion spin ensemble and microwave Hybrid Cavity-Whispering Gallery Modes in a Yttrium Aluminium Garnet dielectric crystal. Coupling strengths of $220$~MHz and mode quality…

Materials Science · Physics 2015-09-23 W. G. Farr , M. Goryachev , J. M. le Floch , P. Bushev , M. E. Tobar

Cu$_2$OSeO$_3$ has fascinating magnetic phases that can be easily manipulated through chemical doping. In this work, we report on the synthesis and characterization of Co-doped Cu$_2$OSeO$_3$ and its influence on both the atomic and…

Materials Science · Physics 2026-04-22 M. Vás , A. J. Ferguson , H. E. Maynard-Casely , C. Ulrich , E. P. Gilbert , S. Yick , T. Söhnel
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