A simple external resistance heating diamond anvil cell and its application for synchrotron radiation x-ray diffraction

Fan, Dongrui; Zhou, Wenge; Wei, Shuyi; Liu, Yonggang; Ma, Maining; Xie, Hui

doi:10.1063/1.3430069

Cited by 29 publications

(14 citation statements)

References 23 publications

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“…First we set the pressure at 6.21 GPa at RT, and then we increased the temperature gradually to 390 K (see the Methods and also ref. 42). When approaching and stabilizing the temperature at 390 K, the pressure first increased a little to 6.27 GPa and decreased gradually and finally stabilized around 6.05-6.01 GPa.…”

Section: Discussionmentioning

confidence: 99%

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Hierarchical densification and negative thermal expansion in Ce-based metallic glass under high pressure

et al. 2015

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The polyamorphsim in amorphous materials is one of the most fascinating topics in condensed matter physics. In amorphous metals, the nature of polyamorphic transformation is poorly understood. Here we investigate the structural evolution of a Ce-based metallic glass (MG) with pressure at room temperature (RT) and near the glass transition temperature by synchrotron X-ray diffraction, uncovering novel behaviours. The MG shows hierarchical densification processes at both temperatures, arising from the hierarchy of interatomic interactions. In contrast with a continuous and smooth process for the low-to medium-density amorphous state transformation at RT, a relatively abrupt and discontinuous transformation around 5.5 GPa is observed at 390 K, suggesting a possible weak first-order nature. Furthermore, both positive and abnormal-negative thermal expansion behaviours on medium-range order are observed in different pressure windows, which could be related to the low-energy vibrational motions and relaxation of the weakly linked solute-centred clusters.

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Section: Discussionmentioning

confidence: 99%

“…A resistance-heating system (ref. 42) was used to heat the sample in DAC, and temperature was measured by the NiCr-NiSi thermocouple with its precision o±1°C.…”

Section: Methodsmentioning

confidence: 99%

Hierarchical densification and negative thermal expansion in Ce-based metallic glass under high pressure

et al. 2015

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“…Following this, the temperature was lowered down to 300 K in 200 K steps. At each P-T condition, an X-ray diffraction pattern was collected after the experiment temperature was maintained for ~600 s. The typical exposure time for collecting the diffraction patterns of the sample and the pressure marker was 600 s. Details of the experimental setup and cell assembly are described in Fan et al (2010).…”

Section: High-temperature and High-pressure Powder X-ray Diffraction mentioning

confidence: 99%

Effects of water on P-V-T equation of state of pyrope

Fan

et al. 2017

Physics of the Earth and Planetary Interiors

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High-pressure single-crystal / powder synchrotron X-ray diffraction was carried out on a hydrous pure magnesium pyrope (Mg 3 Al 2 Si 3 O 12) containing 900 ppmw H 2 O, synthesized at 4.0 GPa and 1300 K. The pressure-volume (P-V) single-crystal data from room pressure to 9.81 GPa at ambient temperature were fitted by a third-order Birch-Murnaghan equation of state (BM-EoS) yielding a unit-cell volume of V 0 = 1505.14±0.38 Å 3 , an isothermal bulk modulus of K 0 = 160±3GPa and its pressure derivative K′ 0 = 5.2±0.4. When fixing K' 0 =4.0, the data yielded V 0 = 1504.58±0.32 Å 3 and K 0 = 166±2GPa. The pressure-volume-temperature (P-V-T) EoS of the synthetic hydrous pyrope was also measured at temperatures up to 900 K and pressures up to 16.75 GPa, using a diamond anvil cell in conjunction with in situ synchrotron angle-dispersive powder X-ray diffraction. The P-V data at room temperature and in a pressure range of 0.0001-14.81 GPa were then analyzed by a third-order BM-EoS and yielded V 0 = 1505.35±0.25 Å 3 , K 0 = 161±2 GPa, K′ 0 = 5.0±0.3. With K' 0 fixed to 4.0, we also obtained V 0 = 1505.04±0.29 Å 3 and K 0 = 167±1 GPa. Consequently, we fitted the P-V-T data with the high-temperature third-order BM-EoS approach and obtained the thermoelastic parameters of V 0 = 1505.4±0.3 Å 3 , K 0 =162±1 GPa, K′ 0 = 4.9±0.2, the temperature derivative of the bulk modulus (∂K 0 /∂T

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“…For each P-T condition, an X-ray diffraction pattern was collected. The spectrums were selected after the experiment temperature was kept for ~600 s. Typical exposure times for collecting diffraction patterns of the sample and the pressure marker were 600 s. Details of the experimental setup and cell assembly were described in Fan et al (2010).…”

Section: Room-temperature and High-pressure Single-crystal X-ray Diffmentioning

confidence: 99%

Compressibility and equation of state of beryl (Be3Al2Si6O18) by using a diamond anvil cell and in situ synchrotron X-ray diffraction

Fan

Kuang

et al. 2015

Phys Chem Minerals

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K ′ 0 = 4.2 ± 0.3. With K ′ 0 fixed to 4.0, we also obtained V 0 = 675.2 ± 0.1 Å 3 and K 0 = 182 ± 1 GPa. Consequently, we fitted the P-V-T data with high-temperature BM-EoS approach using the resultant K ′ 0 (4.2) from room-temperature BM-EoS and then obtained the thermoelastic parameters of V 0 = 675.3 ± 0.2 Å 3 , K 0 = 180 ± 1 GPa, temperature derivative of the bulk modulus (∂K/∂T) P = −0.01 7 ± 0.004 GPa K −1 , and thermal expansion coefficient at ambient conditions α 0 = (2.82 ± 0.74) × 10 −6 K −1 . Present results were also compared with previous studies for beryl. From the comparison of these fittings, we propose to constrain K 0 = 180 GPa and K ′ 0 = 4.2 for beryl. And we also observed that beryl exhibits anisotropic thermal expansion at relatively low temperatures, which is very consistent with previous studies. Furthermore, no phase transition was observed in the entire pressure and temperature range (up to 16.84 GPa and 750 K) of this study for the natural beryl.

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A simple external resistance heating diamond anvil cell and its application for synchrotron radiation x-ray diffraction

Cited by 29 publications

References 23 publications

Hierarchical densification and negative thermal expansion in Ce-based metallic glass under high pressure

Hierarchical densification and negative thermal expansion in Ce-based metallic glass under high pressure

Effects of water on P-V-T equation of state of pyrope

Compressibility and equation of state of beryl (Be3Al2Si6O18) by using a diamond anvil cell and in situ synchrotron X-ray diffraction

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