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Related papers: Magnetic phase transitions in SmCoAsO

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The high magnetic field behaviour of the triangular lattice antiferromagnet CuFeO_2 is studied using single crystal neutron diffraction measurements in a field of up to 14.5 T and also by magnetisation measurements in a field of up to 12 T.…

Strongly Correlated Electrons · Physics 2009-10-31 O. A. Petrenko , G. Balakrishnan , M. R. Lees , D. McK Paul , A. Hoser

We report on neutron diffraction, thermal expansion, magnetostriction, dielectric, and specific heat measurements on polycrystalline FeCr2S4 in external magnetic fields. The ferrimagnetic ordering temperatures $T_{\mathrm{C}}\approx 170$ K…

We report on the thermodynamic, magnetic properties and the magnetic structure of ludwigite-type Cu2MnBO5. The specific heat, the low-field magnetization and the paramagnetic susceptibility were studied on a single crystal and combined with…

Magnetic properties of single crystalline SmRu$_{2}$Al$_{10}$ have been investigated by electrical resistivity, magnetic susceptibility, and specific heat. We have confirmed the successive magnetic phase transitions at $T_{\text{N}}=12.3$ K…

Strongly Correlated Electrons · Physics 2015-12-10 S. Takai , T. Matsumura , H. Tanida , M. Sera

Magnetic state is a partial ordered state if only part of the electrons in the system give contribution to the magnetic order. We study Heisenberg model of two sublattice spin system, on the body-centered cubic lattice, with…

Strongly Correlated Electrons · Physics 2024-09-20 N. Karchev

We present first specific-heat data of the alloy Yb(Rh_(1-x)Co_x)_2Si_2 at intermediate Co-contents x=0.18, 0.27, and 0.68. The results already point to a complex magnetic phase diagram as a function of composition. Co-doping of YbRh_2Si_2…

Strongly Correlated Electrons · Physics 2010-03-03 C. Klingner , C. Krellner , C. Geibel

Effect of Co substitution on Mn$_3$Ga is investigated using first-principles study for structural and magnetic properties. Without Co, ferrimagnetic Heusler compound Mn3Ga is in tetragonal phase. With Co substitution, depending on Co…

Materials Science · Physics 2023-03-22 Quynh Anh T. Nguyen , Thi H. Ho , Myung-Hwa Jung , Sonny H. Rhim

Critical points that can be suppressed to zero temperature are interesting because quantum fluctuations have been shown to dramatically alter electron gas properties. Here, the metal formed by Co doping the paramagnetic insulator FeS$_2$,…

Materials Science · Physics 2009-11-13 S. Guo , D. P. Young , R. T. Macaluso , D. A. Browne , N. L. Henderson , J. Y. Chan , L. L. Henry , J. F. DiTusa

Noncollinear metallic antiferromagnets, with their rapid spin dynamics, efficient spin transport, and distinctive spin textures, play a pivotal role in advancing the field of spintronics. In this study, we report a comprehensive…

57Fe M\"{o}ssbauer spectroscopy was applied to an iron-based layered compound CeFePO. At temperatures from 9.4 to 293 K, no magnetic splitting was observed in the M\"ossbauer spectra of CeFePO indicating a paramagnetic phase of the Fe…

Strongly Correlated Electrons · Physics 2012-05-25 Tetsuro Nakamura , Takashi Yamamoto , Masanori Matoba , Yasuaki Einaga , Yoichi Kamihara

We report the magnetic, magnetocaloric, and magnetotransport properties of the semi-Heusler alloy Cu0.85Ni0.15MnSb, which exhibits coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) phases. A broad magnetic phase transition is…

Strongly Correlated Electrons · Physics 2016-03-30 Madhumita Halder , K. G. Suresh , M. D. Mukadam , S. M. Yusuf

Developing a comprehensive magnetic theory for correlated itinerant magnets poses challenges due to the difficulty in reconciling both local moments and itinerant electrons. In this work, we investigate the microscopic process of magnetic…

Strongly Correlated Electrons · Physics 2024-11-26 Yuanji Xu , Yuechao Wang , Xintao Jin , Haifeng Liu , Yu Liu , Haifeng Song , Fuyang Tian

The interplay between topological electronic structure and magnetism may result in intricate physics. In this work, we describe a case of rather peculiar coexistence or competition of several magnetic phases below a seemingly single…

Strongly Correlated Electrons · Physics 2022-12-21 Igor Plokhikh , Vladimir Pomjakushin , Dariusz Jakub Gawryluk , Oksana Zaharko , Ekaterina Pomjakushina

The magnetic properties of the ferrimagnetic cobaltite CaBaCo$_4$O$_7$ are systematically investigated. We find that the susceptibility exhibits a downward deviation below $\sim$ 360 K, suggesting the occurrence of short range magnetic…

Strongly Correlated Electrons · Physics 2015-03-19 Zhe Qu , Langsheng Ling , Lei Zhang , Li Pi , Yuheng Zhang

We report the structural, magnetic, exchange bias and magnetotransport effect in Sr$_{4}$Fe$_{3}$CoO$_{11}$. The material crystallizes in the orthorhombic $\textit{Cmmm}$ space group. It shows antiferromagnetic (G-type) transition (T$_{N}$…

Strongly Correlated Electrons · Physics 2020-01-08 Prachi Mohanty , Sourav Marik , C. Madhu , D. Singh , O. Toulemonde , Ravi P. Singh

We study thin films and magnetic tunnel junction nanopillars based on Ta/Co$_{20}$Fe$_{60}$B$_{20}$/MgO multilayers by electrical transport and magnetometry measurements. These measurements suggest that an ultrathin magnetic oxide layer…

We report the observation of para - antiferromagnetic transition at ~ 50 K in lithium iron phosphate, LiFePO4 through DC magnetization and M\"ossbauer spectroscopy. The Ferrous ion Fe2+ (3d6, 5D) in LiFePO4 exhibits relaxation effects with…

Materials Science · Physics 2015-06-04 Y. Sundarayya , C. Bansal , C. S. Sunandana , Ajay Kumar Mishra , Richard A. Brand , Horst Hahn

We have investigated magnetization(M), magnetocaloric effect(MCE) and magnetothermopower(MTEP) in polycrystalline Pr0.6Sr0.4MnO3, which shows a second-order paramagnetic to ferromagnetic transition near room temperature (TC = 305 K).…

Strongly Correlated Electrons · Physics 2012-10-19 D. V. Maheshwar Repaka , T. S. Tripathi , M. Aparnadevi , R. Mahendiran

The dc magnetization (M) and electrical resistivity (\rho) as functions of magnetic field and temperature are reported for a series of lightly electron dopedCa(1-x)La(x)MnO(3) (0<=x<=0.10) specimens for which magnetization [Phys. Rev. B…

Strongly Correlated Electrons · Physics 2007-05-23 C. Chiorescu , J. J. Neumeier , J. L. Cohn

Using the spectroscopies based upon x-ray absorption, we have studied the structural and magnetic properties of Zn$_{1-x}$Co$_{x}$O films ($x$ = 0.1 and 0.25) produced by reactive magnetron sputtering. These films show ferromagnetism with a…

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