A compact bellows-driven diamond anvil cell for high-pressure, low-temperature magnetic measurements

Feng, Yejun; Silevitch, D. M.; Rosenbaum, T. F.

doi:10.1063/1.4867078

Cited by 18 publications

(20 citation statements)

References 26 publications

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“…Copper-beryllium membrane-driven DACs were used and helium gas was loaded at 1 GPa to act as the pressure transmitting medium. 26 In both experiments finely powdered samples were produced by carefully crushing single crystals, and then loaded into the DAC. Ruby spheres and gold powder were also loaded into the cells for calibrating the applied pressure.…”

Section: Methodsmentioning

confidence: 99%

Pressure-induced collapsed-tetragonal phase inSrCo2As2

et al. 2015

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We present high-energy x-ray diffraction data under applied pressures up to p = 29 GPa, neutron diffraction measurements up to p = 1.1 GPa, and electrical resistance measurements up to p = 5.9 GPa, on SrCo2As2. Our x-ray diffraction data demonstrate that there is a first-order transition between the tetragonal (T) and collapsedtetragonal (cT) phases, with an onset above approximately 6 GPa at T = 7 K. The pressure for the onset of the cT phase and the range of coexistence between the T and cT phases appears to be nearly temperature independent. The compressibility along the a-axis is the same for the T and cT phases whereas, along the c-axis, the cT phase is significantly stiffer, which may be due to the formation of an As-As bond in the cT phase. Our resistivity measurements found no evidence of superconductivity in SrCo2As2 for p ≤ 5.9 GPa and T ≥ 1.8 K. The resistivity data also show signatures consistent with a pressure-induced phase transition for p 5.5 GPa. Singlecrystal neutron diffraction measurements performed up to 1.1 GPa in the T phase found no evidence of stripetype or A-type antiferromagnetic ordering down to 10 K. Spin-polarized total-energy calculations demonstrate that the cT phase is the stable phase at high pressure with a c a ratio of 2.54. Furthermore, these calculations indicate that the cT phase of SrCo2As2 should manifest either A-type antiferromagnetic or ferromagnetic order.

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Section: Methodsmentioning

confidence: 99%

Pressure-induced collapsed-tetragonal phase inSrCo2As2

et al. 2015

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“…AC magnetic susceptibility measurements at a probe field of 0.5 Oe were carried out using a diamond anvil cell designed for rapidly exploring H-P-T parameter space [24]. Sapphire seats and thermally-hardened BeCu or MP35N gaskets were used to avoid any ferromagnetic background disturbance to the superconducting transition [24,25]. Four different crystals were studied in a Methanol:Ethanol 4:1 hydrostatic pressure medium.…”

Section: Experimental Methods and Resultsmentioning

confidence: 99%

“…Single crystals were polished down to plates of 20-30 μm thickness with a surface norm of (1,0,0), and broken into small shards (120×120×20 μm 3 ) to be loaded into the diamond anvil cell. AC magnetic susceptibility measurements at a probe field of 0.5 Oe were carried out using a diamond anvil cell designed for rapidly exploring H-P-T parameter space [24]. Sapphire seats and thermally-hardened BeCu or MP35N gaskets were used to avoid any ferromagnetic background disturbance to the superconducting transition [24,25].…”

Section: Experimental Methods and Resultsmentioning

confidence: 99%

Multiple superconducting states induced by pressure inMo3Sb7

et al. 2017

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Abstract:Tuning competing ordering mechanisms with hydrostatic pressure in the 4d intermetallic compound Mo 3 Sb 7 reveals an intricate interplay of structure, magnetism, and superconductivity. Synchrotron x-ray diffraction and magnetic susceptibility measurements, both employing diamond anvil cell technologies, link a first-order structural phase transition to a doubling of the superconducting transition temperature. In contrast to the spin-dimer picture for Mo 3 Sb 7 , we deduce from x-ray absorption near edge structure and dc magnetization measurements at ambient pressure that Mo 3 Sb 7 should only possess very small, itinerant magnetic moments. The pressure evolution of the superconducting transition temperature strongly suggests its enhancement due to a difference in the phonon density-of-states with changed crystal symmetry.2

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“…Data presented here were measured on three polycrystalline Cr samples, with an ambient-pressure residual resistivity ratio of 70-110 between 300 K and 4 K, and a 4 K resistivity at all pressures with ρ 0 = 0.10-0.14 μΩ-cm. Electrical measurements were carried out in a Physical Property Measurement System (Quantum Design, Inc.) using a pressure cell designed for measurements in the multidimensional H-P-T space [40]. Sapphire seats and thermally-hardened MP35N gaskets were used to minimize magnetic field distortion.…”

Section: Experimental Methodsmentioning

confidence: 99%

Direct probe of Fermi surface evolution across a pressure-induced quantum phase transition

et al. 2015

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Abstract:The nature of a material's Fermi surface is crucial to understanding its electronic, magnetic, optical, and thermal characteristics. Traditional measurements such as angle resolved photoemission spectroscopy and, de Haas-van Alphen quantum oscillations can be difficult to perform in the vicinity of a pressure-driven quantum phase transition, although the evolution of the Fermi surface may be tied to the emergence of exotic phenomena. We demonstrate here that magnetic x-ray diffraction in combination with Hall effect measurements in a diamond anvil cell can provide valuable insight into the Fermi surface evolution in spin-and charge-density-wave systems near quantum phase transitions. In particular, we track the gradual evolution of the Fermi surface in elemental chromium and delineate the critical pressure and absence of Fermi surface reconstruction at the spin-flip transition.

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A compact bellows-driven diamond anvil cell for high-pressure, low-temperature magnetic measurements

Cited by 18 publications

References 26 publications

Pressure-induced collapsed-tetragonal phase inSrCo2As2

Pressure-induced collapsed-tetragonal phase inSrCo2As2

Multiple superconducting states induced by pressure inMo3Sb7

Direct probe of Fermi surface evolution across a pressure-induced quantum phase transition

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