Magnetic properties of the itinerant ferromagnet 
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 under pressure studied by 
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 NMR

Rana, Khusboo; Kotegawa, Hisashi; Ullah, R. R.; Gati, Elena; Bud’ko, Sergey L.; Canfield, Paul C.; Tou, Hideki; Taufour, Valentin; Furukawa, Yuji

doi:10.1103/physrevb.103.174426

Cited by 9 publications

(4 citation statements)

References 36 publications

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“…As per theoretical prediction [23][24][25][26][28][29][30][31], at low temperatures, such prevention of qcp has been suggested with the outcome of the transition, changing its order from second order ferromagnetic transition to first order kind at the tricritical point or due to the emergence of new phases. With regard to the first order kind transition, experimentally, it has been observed in many metallic systems like [23] MnSi, ZrZn 2 , CoS 2 , UGe 2 , URhGe, UCoAl, URhAl and in the latter, a modulated magnetic phase [32][33][34], new phases [35][36][37] have been observed. Under the class of quasi one-dimensional systems that are heavy fermion metallic ferromagnet [21,38,39], ferromagnetic qcps have been observed.…”

Section: Introductionmentioning

confidence: 99%

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Brar,

Pathak,

Khalid

et al. 2024

J. Phys.: Condens. Matter

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We investigate the room temperature structure (global and local), temperature dependent magnetic and transport behaviour of Ni1–xVx (0 ≤ x ≤ 0.13) alloys. Our Energy Dispersive Analysis of X-rays results show that the prepared compositions are stoichiometric. With increase in V doping, the compounds exhibit a quantum phase transition around xc = 0.12, where the ferromagnetic phase is suppressed. Our results show that all the compounds stabilize in face centred cubic structure at RT and the lattice parameter shows unusual behaviour close to xc. The magnetic and heat capacity studies show signature of Griffiths phase on either side of xc. From 25 K to the lowest collected temperature, we observe a linear T dependence of resistivity at x = 0.1 and around xc, which is separated by a Fermi-liquid region around x = 0.106. This suggests that the origin of the transport behaviour is different around the quantum critical point and away from it. Our Ni K-edge X-ray Absorption Spectroscopy results show that there is a significant reduction in the first coordination number around Ni central atom on doping. Further, with doping, there is distortion in the first coordination shell around Ni. This suggests, with V doping, the local structure around Ni is different from the global structure as obtained from the X-ray Diffraction results. Interestingly, with doping, we observe a direct connection between the extent of distortion at RT and the magnetic disorder obtained at 2 K. We believe our results will motivate the scientific community to further study the interplay between the structural disorder and quantum fluctuations with temperature at the local level.

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Section: Introductionmentioning

confidence: 99%

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Brar,

Pathak,

Khalid

et al. 2024

J. Phys.: Condens. Matter

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“…The roles of spin fluctuations and quantum criticality in itinerant ferromagnetic systems were investigated in the systems LaV x Cr 1−x Ge 3 and CeCr 1−x Ti x Ge 3 where a strong suppression of ferromagnetic order was observed [5,6]. Recently, LaCrGe 3 has drawn considerable attention in the search for a pressure driven ferromagnetic quantum critical point [7][8][9]. For the investigation of the spin dynamics of metals with strong ferromagnetic correlations the spectroscopic method of electron spin resonance (ESR) provided important results in 3d metals like TiBe 2 [10], ZrZn 2 [11,12], NbFe 2 [13] as well as 4 f heavy fermion metals like YbRh 2 Si 2 [14] and CeRuPO [15,16].…”

Section: Introductionmentioning

confidence: 99%

Electron spin resonance of the itinerant ferromagnets LaCrGe₃, CeCrGe₃ and PrCrGe₃

Sichelschmidt

Gruner

Das

et al. 2021

J. Phys.: Condens. Matter

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We report electron spin resonance of the itinerant ferromagnets LaCrGe 3 , CeCrGe 3 , and PrCrGe 3 . These compounds show well defined and very similar spectra of itinerant Cr 3d spins in the paramagnetic temperature region. Upon cooling and crossing the Cr-ferromagnetic ordering (below around 90 K) strong spectral structures start to dominate the resonance spectra in a quite different manner in the three compounds. In the Ce-and Pr-compounds the resonance is only visible in the paramagnetic region whereas in the La-compound the resonance can be followed far below the ferromagnetic ordering temperature. This behavior will be discussed in terms of the specific interplay between the 4 f and 3d magnetism which appears quite remarkable since CeCrGe 3 displays heavy fermion behavior even in the magnetically ordered state.

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“…LaCrGe 3 is a metallic, itinerant ferromagnet system with T C = 86 K, which crystallizes in a hexagonal structure, with the face-sharing Cr-centered octahedra aligned along the c-axis (space group P 6 3 /mmc) Bie et al (2007); Cadogan et al (2012). Recently, LaCrGe 3 has become an intensively studied under pressure Taufour et al (2016); Kaluarachchi et al (2017a); Taufour et al (2018); Gati et al (2021); Rana et al (2021); Nguyen et al (2018) offering a clear and new example of avoided ferromagnetic quantum criticality. The ambient pressure study of LaCrGe 3 can also offer fertile ground to study magnetic behavior.…”

Section: Chapter 1 Introductionmentioning

confidence: 99%

“…Taufour et al (2016);Kaluarachchi et al (2017a);Taufour et al (2018);Gati et al (2021);Rana et al (2021);Nguyen et al (2018) In addition to intriguing high-pressure properties, the ambient pressure characteristics of LaCrGe 3 potentially make it a fertile ground to study different aspects of magnetic behavior.LaCrGe 3 crystallizes in a hexagonal structure, with the face-sharing Cr-centered octahedra aligned along the c-axis (space group P 6 3 /mmc)Bie et al (2007);Cadogan et al (2012). The samples of LaCrGe 3 can be grown in a single crystal formLin et al (2013) with a rod-like morphology (c -axis along the rod's axis) and up to several hundred mg mass.…”

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confidence: 99%

Study of the superconducting and magnetic properties of single crystals grown using the high-temperature solution method

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The high-temperature solution growth method is a powerful tool for creating single crystalline samples that then enable the exploration of the superconductivity and magnetization of novel materials. This dissertation presents work that uses the solution growth method to synthesize CaK(Fe 1−x T x ) 4 As 4 and LaCrGe 3 single crystals. By measuring these single crystals, we study the relations or competition between superconductivity and magnetic transition, try to understand the unconventional superconductors, and explore the magnetic domain wall dynamics.Composition-transition temperature phase diagrams of CaK(Fe 1−x T x ) 4 As 4 , T = Cr and Mn, are constructed by elemental analysis, thermodynamic and transport measurements. As the substitution level increases, the superconducting transition temperature decreases monotonically and is finally suppressed below 1.8 K. Kink-like features appear in thermodynamic and transport measurements, which can be associated with antiferromagnetic transitions, and the transition temperature increases as the substitution level increases. Compared with electron-doped CaKFe 4 As 4 , the Cr and Mn phase diagrams are not overlapped as a function of hole doping, which indicates that the band-filling behavior is not the primary factor controlling the transition temperature in the Cr and Mn substitution samples. However, phase diagrams of Mn-and Cr-1144 are overlapped as a function of substitution level, x, which reveals the bi-modal responses of the phase diagram to transition metal substitution: on the side of Ni and Co substitution, the rigid band is observed with electron doping, and on the side of Mn and Cr substitution, compounds behave as ionic compounds and local moments substitution seems to be dominated instead of hole doping. Elastoresistivity coefficients, 2m 66 and m 11 − m 12 , as a function of temperature, are also measured in Mn substituted 1144. 2m 66 and m 11 − m 12 are qualitatively similar to CaK(Fe 1−x Ni x ) 4 As 4 . This may indicate that the magnetic order in Mn substituted system may xvi still be the same as CaK(Fe 1−x Ni x ) 4 As 4 . A clear change in H ′ c2 (T )/T c , coherence length, and the London penetration near the crossing of magnetic transition and superconducting transition as a function of substitution level is observed and probably is related to change of the Fermi surface due to magnetic order.LaCrGe 3 is an itinerant, metallic ferromagnet with a Curie temperature (T C ) of ∼ 86 K.Anisotropic M (H) isotherms, coupled with anisotropic AC susceptibility data is presented, and show a remarkable low-temperature coercivity associated with exceptionally sharp, complete magnetization reversals to and from fully polarized states. The behavior of coercivity is temperature dependent and was first discovered in bulk single crystalline samples, which may be due to very low bulk pinning, strong uniaxial anisotropy, and, possibly, strong surface pinning.

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Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by La139 NMR

Cited by 9 publications

References 36 publications

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Electron spin resonance of the itinerant ferromagnets LaCrGe₃, CeCrGe₃ and PrCrGe₃

Study of the superconducting and magnetic properties of single crystals grown using the high-temperature solution method

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Magnetic properties of the itinerant ferromagnet LaCrGe3 under pressure studied by La139 NMR

Cited by 9 publications

References 36 publications

Structural and physical properties of Ni 1−x V x alloys around and away from quantum critical point

Structural and physical properties of Ni 1−x V x alloys around and away from quantum critical point

Electron spin resonance of the itinerant ferromagnets LaCrGe3, CeCrGe3 and PrCrGe3

Study of the superconducting and magnetic properties of single crystals grown using the high-temperature solution method

Contact Info

Product

Resources

About

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Structural and physical properties of Ni 1−x V_x alloys around and away from quantum critical point

Electron spin resonance of the itinerant ferromagnets LaCrGe₃, CeCrGe₃ and PrCrGe₃