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We have grown single crystals of EuFe2As2 and investigated its electrical transport and thermodynamic properties. Electrical resistivity and specific heat measurements clearly establish the intrinsic nature of magnetic phase transitions at…

超导电性 · 物理学 2009-11-13 H. S. Jeevan , Z. Hossain , Deepa Kasinathan , H. Rosner , C. Geibel , P. Gegenwart

Single crystals of monoclinic La$_{5}$Co$_{2}$Ge$_{3}$ were grown using a self-flux method and were characterized by room-temperature powder X-ray diffraction, anisotropic temperature and field dependent magnetization, temperature dependent…

We present a comprehensive investigation into the physical properties of intermetallic ErPd$_2$Si$_2$, a compound renowned for its intriguing magnetic and electronic characteristics. We confirm the tetragonal crystal structure of…

Considering certain interesting features in the previously reported 166Er Moessbauer effect and neutron diffraction data on the polycrystalline form of ErPd2Si2 crystallizing in ThCr2Si2-type tetragonal structure, we have carried out…

强关联电子 · 物理学 2009-11-13 E. V. Sampathkumaran , Niharika Mohapatra , Kartik K Iyer , C. D. Cao , W. Loeser , G. Behr

Identifying intrinsic low-dimensional ferromagnets with high transition temperature and electrically tunable magnetism is crucial for the development of miniaturized spintronics and magnetoelectrics. Recently long-range 2D ferromagnetism…

材料科学 · 物理学 2020-08-27 Hua Wang , Jingshan Qi , Xiaofeng Qian

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…

材料科学 · 物理学 2015-06-17 Xiao Lin , Valentin Taufour , Sergey L. Bud'ko , Paul C. Canfield

We present a detailed analysis of the results of our numerical study of the crystal and electronic structure of the room temperature organometallic ferrimagnet of general composition V(TCNE)$_{x}$ with $% x\approx 2$. The results of the…

强关联电子 · 物理学 2010-02-02 Andrei L. Tchougréeff , Richard Dronskowski

We synthesized the ferromagnetic EuAgP semiconductor and conducted a comprehensive study of its crystalline, magnetic, heat capacity, band gap, and magnetoresistance properties. Our investigation utilized a combination of X-ray diffraction,…

强关联电子 · 物理学 2024-09-04 Qian Zhao , Kaitong Sun , Si Wu , Hai-Feng Li

We report the detailed analysis of temperature dependent neutron diffraction pattern of the Cr$_2$CoAl inverse Heusler alloy and unveil the magnetic structure up to the phase transition as well as its fully compensated ferrimagnetic nature.…

强关联电子 · 物理学 2023-03-22 Guru Dutt Gupt , Yousef Kareri , James Hester , Clemens Ulrich , R. S. Dhaka

Recent results have demonstrated an exceptionally high dielectric constant in the range 200 K-330 K in a crystalline tianium oxide : Rb2Ti2O5. In this article, the possibility of a structural transition giving rise to ferroelectricity is…

Electrical resistivity \rho(T) of the 5f ferromagnet UGa2 was investigated for single-crystal samples as a function of pressure and magnetic field. The Curie temperature monotonously increases from T$_{C}$ = 124 K under quasi-hydrostatic…

强关联电子 · 物理学 2015-02-18 A. V. Kolomiets , J. -C. Griveau , J. Prchal , A. V. Andreev , L. Havela

Electrical resistivity, magnetic susceptibility, and specific heat measurements on single crystals of La$Tr_{2}$Al$_{20}$ ($Tr$ = Ti, V, Nb, and Ta) revealed that these four compounds exhibit weak-coupling superconductivity with transition…

超导电性 · 物理学 2018-02-22 Akira Yamada , Ryuji Higashinaka , Tatsuma D. Matsuda , Yuji Aoki

Electrical resistivity, magnetization and specific heat have been measured for single crystals of SmPt$_{2}$Cd$_{20}$. It has been found that SmPt$_{2}$Cd$_{20}$ exhibits a ferromagnetic (FM) transition at $T_{\rm C} = 0.64$ K, the lowest…

强关联电子 · 物理学 2017-08-29 Akira Yamada , Shota Oike , Ryuji Higashinaka , Tatsuma D. Matsuda , Yuji Aoki

We study correlation effects and temperature dependencies in the electronic structure of thin ferromagnetic local-moment films. In a first step the Kondo-lattice model is investigated as a candidate for a proper representation of…

强关联电子 · 物理学 2015-06-24 W. Nolting , C. Santos

We present the crystal growth as well as the structural, chemical and physical chracterization of SmRh$_2$Si$_2$ single crystals. Their ground state is antiferromagnetic, as indicated by the behaviour of the magnetic susceptibility and the…

强关联电子 · 物理学 2019-05-03 Kristin Kliemt , Jacintha Banda , Christoph Geibel , Manuel Brando , Cornelius Krellner

We report both experimental and theoretical investigations of the physical properties of Ba$_\mathrm{2}$Mn$_\mathrm{2}$Sb$_\mathrm{2}$O single crystals. This material exhibits a hexagonal structure with lattice constants: a = 4.7029(15)…

强关联电子 · 物理学 2012-12-05 J. Li , C. E. Ekuma , I. Vekhter , M. Jarrell , J. Moreno , S. Stadler , A. B. Karki , R. Jin

The crystal and magnetic structures of AlFe2B2 have been studied with a combination of X-ray and neutron diffraction and electronic structure calculations. The magnetic and magnetocaloric properties have been investigated by magnetisation…

The magnetic properties of ThCr_2Si_2-type single crystals ACo_2Se_2 (A = K, Rb and Cs) have been investigated by magnetic susceptibility and isothermal magnetization measurements at various temperatures. The ferromagnetic phase transition…

超导电性 · 物理学 2013-08-15 Jinhu Yang , Bin Chen , Hangdong Wang , Qianhui Mao , Masaki Imai , Kazuyoshi Yoshimura , Minghu Fang

This article demonstrates an undergraduate experiment for the determination of specific heat capacities of various solids based on a calorimetric approach, where the solid vaporizes a measurable mass of liquid nitrogen. We demonstrate our…

物理教育 · 物理学 2015-05-28 Waqas Mahmood , Muhammad Sabieh Anwar , Wasif Zia

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…

超导电性 · 物理学 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