Pub Date : 2021-10-02DOI: 10.1080/08957959.2021.1998478
R. Tsuruoka, H. Terasaki, S. Kamada, F. Maeda, T. Kondo, N. Hirao, S. Kawaguchi, Iori Yamada, S. Urakawa, A. Machida
ABSTRACT The density of liquid metals at high pressure and high-temperature provides fundamental and important information for understanding their compression behavior and elastic properties. In this study, the densities of liquid gallium (Ga) were measured up to 10 GPa and 533 K using the X-ray absorption method combined with an externally heated diamond anvil cell. The elastic properties (the isothermal bulk modulus (KT0 ), and its pressure derivative (KT0’)) of liquid Ga were obtained by fitting the density data with three equations of state (EOSs) (Murnaghan, third order Birch–Murnaghan, and Vinet). The KT0 values of liquid Ga were determined to be 45.7 ± 1.0–51.7 ± 1.0 GPa at 500 K assuming KT0’ values of 4–6. The obtained KT0 or KT0 ′ showed almost the same values regardless of the EOS used. Compared with previous results, the compression curve of liquid Ga obtained in this study had a slightly stiffer trend at higher pressures.
{"title":"Density and elastic properties of liquid gallium up to 10 GPa using X-ray absorption method combined with externally heated diamond anvil cell","authors":"R. Tsuruoka, H. Terasaki, S. Kamada, F. Maeda, T. Kondo, N. Hirao, S. Kawaguchi, Iori Yamada, S. Urakawa, A. Machida","doi":"10.1080/08957959.2021.1998478","DOIUrl":"https://doi.org/10.1080/08957959.2021.1998478","url":null,"abstract":"ABSTRACT The density of liquid metals at high pressure and high-temperature provides fundamental and important information for understanding their compression behavior and elastic properties. In this study, the densities of liquid gallium (Ga) were measured up to 10 GPa and 533 K using the X-ray absorption method combined with an externally heated diamond anvil cell. The elastic properties (the isothermal bulk modulus (KT0 ), and its pressure derivative (KT0’)) of liquid Ga were obtained by fitting the density data with three equations of state (EOSs) (Murnaghan, third order Birch–Murnaghan, and Vinet). The KT0 values of liquid Ga were determined to be 45.7 ± 1.0–51.7 ± 1.0 GPa at 500 K assuming KT0’ values of 4–6. The obtained KT0 or KT0 ′ showed almost the same values regardless of the EOS used. Compared with previous results, the compression curve of liquid Ga obtained in this study had a slightly stiffer trend at higher pressures.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"379 - 391"},"PeriodicalIF":2.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47250685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.1080/08957959.2021.1981308
M. Gao, Kazuki Nomura, Y. Ando, Yoshiko Nakaura, Zhenya Zhang, Kazutaka Yamamoto
ABSTRACT Apple was impregnated with pigment solution by vacuum heat sealing (VS) and/or high hydrostatic pressure treatment (HHP; 100-600 MPa, 25°C, 5 min). Impregnation efficacy was evaluated as impregnation ratio (%) by image analysis, while damages of cell membrane and texture were quantified by electrical impedance spectroscopy and texture analysis, respectively. Combinations of VS and HHP exclusively achieved 100% impregnation. Meanwhile, the damage was comparable between the samples after VS and VS+100 MPa treatment and aggravated by elevated levels of HHP. As for the texture, breaking stress (hardness) decreased after VS and VS+HHP (100-600 MPa) comparably. Meanwhile, breaking strain (deformability) significantly increased after VS+HHP (200-600 MPa), indicating further damage of strain texture as compared with that after VS and VS+100 MPa treatment. It was indicated that impregnation of apple was fully achieved by a combination of VS and 100 MPa treatment, while minimizing the cell membrane and texture damages.
{"title":"Vacuum impregnation of apple assisted by high hydrostatic pressure","authors":"M. Gao, Kazuki Nomura, Y. Ando, Yoshiko Nakaura, Zhenya Zhang, Kazutaka Yamamoto","doi":"10.1080/08957959.2021.1981308","DOIUrl":"https://doi.org/10.1080/08957959.2021.1981308","url":null,"abstract":"ABSTRACT Apple was impregnated with pigment solution by vacuum heat sealing (VS) and/or high hydrostatic pressure treatment (HHP; 100-600 MPa, 25°C, 5 min). Impregnation efficacy was evaluated as impregnation ratio (%) by image analysis, while damages of cell membrane and texture were quantified by electrical impedance spectroscopy and texture analysis, respectively. Combinations of VS and HHP exclusively achieved 100% impregnation. Meanwhile, the damage was comparable between the samples after VS and VS+100 MPa treatment and aggravated by elevated levels of HHP. As for the texture, breaking stress (hardness) decreased after VS and VS+HHP (100-600 MPa) comparably. Meanwhile, breaking strain (deformability) significantly increased after VS+HHP (200-600 MPa), indicating further damage of strain texture as compared with that after VS and VS+100 MPa treatment. It was indicated that impregnation of apple was fully achieved by a combination of VS and 100 MPa treatment, while minimizing the cell membrane and texture damages.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"414 - 428"},"PeriodicalIF":2.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44799663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.1080/08957959.2021.2001466
J. Kamarád, J. Kaštil, M. Friák, M. Mazalová, O. Schneeweiss, Z. Arnold
ABSTRACT Single crystal of the stoichiometric Ni2MnSn alloy (cubic L21 crystal structure) was prepared by the Czochralski method. The values of the magneto-crystalline anisotropy constant K 1 have been determined at temperature 10 K under ambient and high hydrostatic pressures, K 1 = + 0.17 × 104 and +1.96 × 104 J/m3 (0.7 GPa), respectively. The pressure-induced decrease of magnetization was confirmed and hence the significant non-trivial increase of uniaxial anisotropy with increasing pressure points to a possible distortion of the cubic structure of the single crystal under hydrostatic pressure. Simultaneously, the more pronounced and pressure almost insensitive magneto-crystalline anisotropy, K 1 = + 9.1 × 104 J/m3, has been observed in the martensite phase (orthorhombic structure) of the off-stoichiometric Ni2Mn1.43Sn0.57 alloy. The effect of a directional dependence of the Young modulus that was theoretically derived in the case of the Ni2MnSn-based alloys is discussed.
{"title":"Effect of hydrostatic pressure on magneto-crystalline anisotropy of Heusler Ni2MnSn-based alloy","authors":"J. Kamarád, J. Kaštil, M. Friák, M. Mazalová, O. Schneeweiss, Z. Arnold","doi":"10.1080/08957959.2021.2001466","DOIUrl":"https://doi.org/10.1080/08957959.2021.2001466","url":null,"abstract":"ABSTRACT Single crystal of the stoichiometric Ni2MnSn alloy (cubic L21 crystal structure) was prepared by the Czochralski method. The values of the magneto-crystalline anisotropy constant K 1 have been determined at temperature 10 K under ambient and high hydrostatic pressures, K 1 = + 0.17 × 104 and +1.96 × 104 J/m3 (0.7 GPa), respectively. The pressure-induced decrease of magnetization was confirmed and hence the significant non-trivial increase of uniaxial anisotropy with increasing pressure points to a possible distortion of the cubic structure of the single crystal under hydrostatic pressure. Simultaneously, the more pronounced and pressure almost insensitive magneto-crystalline anisotropy, K 1 = + 9.1 × 104 J/m3, has been observed in the martensite phase (orthorhombic structure) of the off-stoichiometric Ni2Mn1.43Sn0.57 alloy. The effect of a directional dependence of the Young modulus that was theoretically derived in the case of the Ni2MnSn-based alloys is discussed.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"405 - 413"},"PeriodicalIF":2.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41616906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.1080/08957959.2021.1985115
L. Chudinovskikh, R. Boehler
ABSTRACT When powders of polycrystalline transparent materials are compressed in the diamond cell, they undergo a change from translucent to transparent. This effect is due to plastic deformation of the grains leading to a reduction in the size of voids responsible for light scattering. The pressures of the onset and saturation of the optical transmission corelate respectively well with the previously reported yield strengths and hardness obtained by different techniques. From ten measurements on MgO, SiO2, Al2O3, olivine, pyroxene, garnet and a perovskite, we find a ratio between hardness and yield strength of three, which is generally accepted. Preliminary high temperature measurements with the double-sided laser heating technique show that this method may be used for determining rheological properties of minerals at P-T conditions of the deep Earth. This technique for obtaining high optical transmission in polycrystalline materials may also be of interest for modern solid state laser materials.
{"title":"Yield strength and hardness of micron-sized powders measured in the diamond cell","authors":"L. Chudinovskikh, R. Boehler","doi":"10.1080/08957959.2021.1985115","DOIUrl":"https://doi.org/10.1080/08957959.2021.1985115","url":null,"abstract":"ABSTRACT When powders of polycrystalline transparent materials are compressed in the diamond cell, they undergo a change from translucent to transparent. This effect is due to plastic deformation of the grains leading to a reduction in the size of voids responsible for light scattering. The pressures of the onset and saturation of the optical transmission corelate respectively well with the previously reported yield strengths and hardness obtained by different techniques. From ten measurements on MgO, SiO2, Al2O3, olivine, pyroxene, garnet and a perovskite, we find a ratio between hardness and yield strength of three, which is generally accepted. Preliminary high temperature measurements with the double-sided laser heating technique show that this method may be used for determining rheological properties of minerals at P-T conditions of the deep Earth. This technique for obtaining high optical transmission in polycrystalline materials may also be of interest for modern solid state laser materials.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"366 - 378"},"PeriodicalIF":2.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49041913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-13DOI: 10.1080/08957959.2021.1976775
E. I. Kraus, I. Shabalin
ABSTRACT In this paper, using the few-parametric equation of state, an approach is implemented to the calculation of the longitudinal and bulk sound speeds, as well as the elastic moduli of a number of isotropic metals behind the front of a strong shock wave. The results of theoretical calculations for aluminum are compared with the available shock impact experimental data. A new analytical approximation of the dependence of the Poisson's ratio on the pressure is proposed for metals. Non-monotonic dependence of the shear modulus for uranium on the pressure and temperature in view of the melting behind the shock front is determined.
{"title":"A new model to determine the shear modulus and Poisson's ratio of shock-compressed metals up to the melting point","authors":"E. I. Kraus, I. Shabalin","doi":"10.1080/08957959.2021.1976775","DOIUrl":"https://doi.org/10.1080/08957959.2021.1976775","url":null,"abstract":"ABSTRACT In this paper, using the few-parametric equation of state, an approach is implemented to the calculation of the longitudinal and bulk sound speeds, as well as the elastic moduli of a number of isotropic metals behind the front of a strong shock wave. The results of theoretical calculations for aluminum are compared with the available shock impact experimental data. A new analytical approximation of the dependence of the Poisson's ratio on the pressure is proposed for metals. Non-monotonic dependence of the shear modulus for uranium on the pressure and temperature in view of the melting behind the shock front is determined.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"353 - 365"},"PeriodicalIF":2.0,"publicationDate":"2021-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48289103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-03DOI: 10.1080/08957959.2021.1971214
N. Funnell, C. Bull, C. Ridley
ABSTRACT We have modified zirconia-toughened alumina anvil geometry and systematically varied single-toroidal, encapsulated, Ti–Zr gasket dimensions, exploring the resulting effects on pressure and maximum load performance, which have been measured using a Paris–Edinburgh press. Reducing the curvature and depth of the recess at the rear of the anvil appears to permit repeated use of the anvils to higher loads, and a general trend indicates that thinner Ti–Zr gaskets may achieve higher pressures than thicker alternatives.
{"title":"Optimisation of toroidal ZTA anvils and gaskets; towards improved load and pressure performance","authors":"N. Funnell, C. Bull, C. Ridley","doi":"10.1080/08957959.2021.1971214","DOIUrl":"https://doi.org/10.1080/08957959.2021.1971214","url":null,"abstract":"ABSTRACT We have modified zirconia-toughened alumina anvil geometry and systematically varied single-toroidal, encapsulated, Ti–Zr gasket dimensions, exploring the resulting effects on pressure and maximum load performance, which have been measured using a Paris–Edinburgh press. Reducing the curvature and depth of the recess at the rear of the anvil appears to permit repeated use of the anvils to higher loads, and a general trend indicates that thinner Ti–Zr gaskets may achieve higher pressures than thicker alternatives.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"306 - 317"},"PeriodicalIF":2.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43973572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-03DOI: 10.1080/08957959.2021.1954177
Chaowen Xu, Ying Li, T. Inoue, S. Gréaux, Qingze Li, Jing Gao, F. Sun, Leiming Fang
ABSTRACT The sound velocities of polycrystalline Mg-phase D were investigated at the pressure up to 13.6 GPa and room temperature, using ultrasonic interferometry in a multi-anvil apparatus. The P (VP ) and S (VS ) wave velocities obtained at ambient conditions produced the results of VP = 9.26(3) km/s and VS = 5.46(1) km/s. The results are in accordance with the values for Mg-phase D by Brillouin scattering (VP = 9.25 km/s and VS = 5.51km/s). The results, i.e. Ks0 = 153.8(13) GPa and G0 = 99.8(5) GPa obtained through two-dimensional linear fitting analysis are self-consistent with Ks0 = 153.3(16) GPa and G0 = 99.5(10) GPa derived by third-order Eulerian finite strain equations. We also find that Vp of phase D is 1.8–2.2% lower than Fe-ringwoodite, but Vs is higher than Fe-ringwoodite at the bottom of the mantle transition zone by up to 1.3%.
{"title":"Elastic properties of Mg-phase D at high pressure","authors":"Chaowen Xu, Ying Li, T. Inoue, S. Gréaux, Qingze Li, Jing Gao, F. Sun, Leiming Fang","doi":"10.1080/08957959.2021.1954177","DOIUrl":"https://doi.org/10.1080/08957959.2021.1954177","url":null,"abstract":"ABSTRACT The sound velocities of polycrystalline Mg-phase D were investigated at the pressure up to 13.6 GPa and room temperature, using ultrasonic interferometry in a multi-anvil apparatus. The P (VP ) and S (VS ) wave velocities obtained at ambient conditions produced the results of VP = 9.26(3) km/s and VS = 5.46(1) km/s. The results are in accordance with the values for Mg-phase D by Brillouin scattering (VP = 9.25 km/s and VS = 5.51km/s). The results, i.e. Ks0 = 153.8(13) GPa and G0 = 99.8(5) GPa obtained through two-dimensional linear fitting analysis are self-consistent with Ks0 = 153.3(16) GPa and G0 = 99.5(10) GPa derived by third-order Eulerian finite strain equations. We also find that Vp of phase D is 1.8–2.2% lower than Fe-ringwoodite, but Vs is higher than Fe-ringwoodite at the bottom of the mantle transition zone by up to 1.3%.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"233 - 246"},"PeriodicalIF":2.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/08957959.2021.1954177","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45745252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-03DOI: 10.1080/08957959.2021.1941000
Y. Kono, Y. Higo, S. Gréaux, Y. Shibazaki, R. Yamada, H. Kuwahara, N. Kondo
ABSTRACT A new experimental setup to continuously and automatically measure ultrasonic elastic wave velocities, X-ray radiography, and X-ray diffraction in large volume press is developed to explore structural change of amorphous materials at in situ high pressure and high temperature conditions. A continuous measurement for Zr50Cu40Al10 metallic glass is carried out during the heating process from 304 to 1102 K under high pressure conditions of 6.8–8.6 GPa. The sample length, elastic wave velocities, and Poisson’s ratio show marked changes at 611, 745, 825, and 874 K, which are interpreted as glass transition temperature (Tg ) at 611 K, two polyamorphic structural changes at 745 and 825 K, and crystallization above 874 K, respectively. We find that the 1.2Tg temperature (733 K at ∼8 GPa), where simulations study predicted occurrence of thermal rejuvenation, corresponds to the temperature of the polyamorphic structural change (745 K) in Zr50Cu40Al10 metallic glass.
{"title":"Continuous measurement of ultrasonic elastic wave velocities, X-ray radiography and X-ray diffraction of Zr50Cu40Al10 metallic glass at high pressure and high temperature conditions","authors":"Y. Kono, Y. Higo, S. Gréaux, Y. Shibazaki, R. Yamada, H. Kuwahara, N. Kondo","doi":"10.1080/08957959.2021.1941000","DOIUrl":"https://doi.org/10.1080/08957959.2021.1941000","url":null,"abstract":"ABSTRACT A new experimental setup to continuously and automatically measure ultrasonic elastic wave velocities, X-ray radiography, and X-ray diffraction in large volume press is developed to explore structural change of amorphous materials at in situ high pressure and high temperature conditions. A continuous measurement for Zr50Cu40Al10 metallic glass is carried out during the heating process from 304 to 1102 K under high pressure conditions of 6.8–8.6 GPa. The sample length, elastic wave velocities, and Poisson’s ratio show marked changes at 611, 745, 825, and 874 K, which are interpreted as glass transition temperature (Tg ) at 611 K, two polyamorphic structural changes at 745 and 825 K, and crystallization above 874 K, respectively. We find that the 1.2Tg temperature (733 K at ∼8 GPa), where simulations study predicted occurrence of thermal rejuvenation, corresponds to the temperature of the polyamorphic structural change (745 K) in Zr50Cu40Al10 metallic glass.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"219 - 232"},"PeriodicalIF":2.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/08957959.2021.1941000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44146487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-03DOI: 10.1080/08957959.2021.1975699
Jia Qu, Limin Yan, Hetian Liu, Q. Tao, P. Zhu, Zhihui Li, Xin Wang
ABSTRACT The high pressure structural changes of Cu3TeO6 have been investigated by using synchrotron radiation X-ray diffraction and Raman spectroscopy up to 23.2(4) and 45.9(7) GPa, respectively. It was found that Cu3TeO6 transformed from the cubic (Ia-3) structure to the orthorhombic (Ibca) structure around 8.6(1) GPa, and the phase transition was reversible. The phase transformation was subtle because of the similarity between two crystal structures. A large internal lattice strain could be the cause to the pressure-induced structural phase transition.
{"title":"Pressure-induced structural phase transition in corundum-related class Cu3TeO6","authors":"Jia Qu, Limin Yan, Hetian Liu, Q. Tao, P. Zhu, Zhihui Li, Xin Wang","doi":"10.1080/08957959.2021.1975699","DOIUrl":"https://doi.org/10.1080/08957959.2021.1975699","url":null,"abstract":"ABSTRACT The high pressure structural changes of Cu3TeO6 have been investigated by using synchrotron radiation X-ray diffraction and Raman spectroscopy up to 23.2(4) and 45.9(7) GPa, respectively. It was found that Cu3TeO6 transformed from the cubic (Ia-3) structure to the orthorhombic (Ibca) structure around 8.6(1) GPa, and the phase transition was reversible. The phase transformation was subtle because of the similarity between two crystal structures. A large internal lattice strain could be the cause to the pressure-induced structural phase transition.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"318 - 327"},"PeriodicalIF":2.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42979340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-03DOI: 10.1080/08957959.2021.1964495
Yoshiaki Ito, O. Ikeda, Rintaro Ban, T. Kubota, T. Sakamaki, T. Kuribayashi, A. Suzuki
ABSTRACT In-situ X-ray diffraction measurements of ScOOH were conducted under high pressure and temperature conditions up to 11 GPa and 900 K to understand its phase transitions. As the pressure increased, α-ScOOH, InOOH-type ScOOH, and YbOOH-type ScOOH were observed. The experimental results indicate that the boundaries between α-ScOOH and InOOH-type ScOOH, and between InOOH-type and YbOOH-type ScOOH are represented by the following linear equations: P(GPa) = (0.0009 ± 0.0015) × [T(K) – 700] + 4.33 ± 0.04 and P(GPa) = (–0.0029 ± 0.0002) × [T(K) – 800] + 8.1 ± 0.3, respectively. By using a least-squares fit of the second-order Birch–Murnaghan equation of state (EoS) to the experimental compression data, the EoS parameters of the three phases of ScOOH at 400 K were obtained. The volume change of the transition from α-ScOOH to InOOH-type ScOOH is ∼3.9% at 4 GPa and 400 K, while the volume change of the transition from InOOH-type to YbOOH-type ScOOH is ∼7.6% at 9 GPa and 400 K.
{"title":"Phase transitions of ScOOH under high pressure","authors":"Yoshiaki Ito, O. Ikeda, Rintaro Ban, T. Kubota, T. Sakamaki, T. Kuribayashi, A. Suzuki","doi":"10.1080/08957959.2021.1964495","DOIUrl":"https://doi.org/10.1080/08957959.2021.1964495","url":null,"abstract":"ABSTRACT In-situ X-ray diffraction measurements of ScOOH were conducted under high pressure and temperature conditions up to 11 GPa and 900 K to understand its phase transitions. As the pressure increased, α-ScOOH, InOOH-type ScOOH, and YbOOH-type ScOOH were observed. The experimental results indicate that the boundaries between α-ScOOH and InOOH-type ScOOH, and between InOOH-type and YbOOH-type ScOOH are represented by the following linear equations: P(GPa) = (0.0009 ± 0.0015) × [T(K) – 700] + 4.33 ± 0.04 and P(GPa) = (–0.0029 ± 0.0002) × [T(K) – 800] + 8.1 ± 0.3, respectively. By using a least-squares fit of the second-order Birch–Murnaghan equation of state (EoS) to the experimental compression data, the EoS parameters of the three phases of ScOOH at 400 K were obtained. The volume change of the transition from α-ScOOH to InOOH-type ScOOH is ∼3.9% at 4 GPa and 400 K, while the volume change of the transition from InOOH-type to YbOOH-type ScOOH is ∼7.6% at 9 GPa and 400 K.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":"41 1","pages":"275 - 289"},"PeriodicalIF":2.0,"publicationDate":"2021-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46548398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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