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  • PANGAEA  (1,506)
  • American Institute of Physics (AIP)
Collection
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Publisher
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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic transitions in Pr2NiO4 single crystal : The 5th Joint MMM−Intermag Conference (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 70 (1991), S. 6329-6331 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic properties of a stoichiometric Pr2NiO4 single crystal have been examined by means of the temperature dependence of the complex ac susceptibility and the isothermal magnetization in fields up to 200 kOe at T=4.2 K. Three separate phases have been identified and their anisotropic character has been analyzed. A collinear antiferromagnetic phase appears first between TN = 325 K and Tc1 = 115 K, where the Pr ions are polarized by an internal magnetic field. At Tc1 a first modification of the magnetic structure occurs in parallel with a structural phase transition (Bmab to P42/ncm). This magnetic transition has a first-order character and involves both the out-of-plane and the in-plane spin components (magnetic modes gx and gxcyfz, respectively). A second magnetic transition having also a first-order character is also clearly identified at Tc2 = 90 K which corresponds to a spin reorientation process (gxcyfz to cxgyaz magnetic modes). It should be noted as well that the out-of-phase component of χac shows a peak around 30 K which reflects the coexistence of both magnetic configurations in a wide temperature interval. Finally, two field-induced transitions have been observed at 4.2 K when the field is directed along the c axis. We propose that the high-field anomaly arises from a metamagnetic transition of the weak ferromagnetic component, similarly to La2CuO4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.349958
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    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    A spectrometer for the measurement of reflectance-difference spectra (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 2147-2152 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: We describe a spectrometer (visible-ultraviolet photon energy range) for the measurement of reflectance-difference spectra of cubic semiconductors. The spectrometer employs a photoelastic modulator to modulate the polarization of the light incident on the sample and allows for a simple procedure to correct the measured spectra for parasitic components associated with such modulation. The instrument reported has a higher throughput than more conventional setups. To illustrate the spectrometer performance we report on reflectance-difference spectra of (001) oriented GaAs single crystals doped with silicon donors at a level of 1018/cm3.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143952
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Unprecedented magnetoresistance in Cd-substituted Tl2Mn2O7 pyrochlores (2000)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 76 (2000), S. 3274-3276 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Moderate pressure techniques (P=20 kbar) have been used to prepare Tl2−xCdxMn2O7 (0≤x≤0.4) pyrochlore-like materials. The x=0.2 compound has been characterized by neutron powder diffraction, magnetic, magnetotransport, and Hall measurements. This material is ferromagnetic below TC=110 K. Both electrical resistance and magnetoresistance (MR) are enhanced with respect to stoichiometric Tl2Mn2O7, due to the drastic reduction in the number of carriers (electrons) induced by hole doping. MR(0.5 T) is higher than 106% at 120 K, and MR(9 T) is 30% at room temperature. We show that hole doped derivatives of Tl2Mn2O7 are promising candidates in which to search for large bulk magnetoresistance. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.126604
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    Paper (German National Licenses)
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  • 4
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    Carbon isotopes record in the Southeast Pacific (2019)
    PANGAEA
    In:  Supplement to: Martínez Fontaine, Consuelo; De Pol-Holz, Ricardo; Michel, Elisabeth; Siani, Giuseppe; Reyes-Macaya, Dharma; Martínez Méndez, Gema; DeVries, Tim; Stott, Lowell D; Southon, John; Mohtadi, Mahyar; Hebbeln, Dierk (2019): Ventilation of the deep ocean carbon reservoir during the last deglaciation: results from the southeast pacific. Paleoceanography and Paleoclimatology, 34(12), 2080-2097, https://doi.org/10.1029/2019PA003613
    Details
    Publication Date: 2023-03-03
    Description: Supplementary material for Martínez Fontaine et al., 2019 (Table S1), including the radiocarbon ages in benthonic and planktonic foraminifera in six cores in the Chilean margin, beetween ~31°S and ~36°S (Table S3). The age models for the cores are detailed in Martínez Fontaine et al., 2019 and were produced using the information on planktonic δ13C (Table S2). Also included are the Δ14C resulting from the age models.
    Keywords: Center for Marine Environmental Sciences; Deglaciation; MARUM; radiocarbon; Southeast Pacific
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 5
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    (Table S2) Carbon isotope records of sediment cores from the Chilean margin (2019)
    PANGAEA
    Details
    Publication Date: 2023-06-27
    Keywords: AGE; Age, comment; Center for Marine Environmental Sciences; Deglaciation; DEPTH, sediment/rock; Event label; GeoB7149-2; GeoB7163-7; GeoB7167-6; Globigerina bulloides, δ13C; Gravity corer (Kiel type); MARUM; Neogloboquadrina dutertrei, δ13C; off Chile; PUCK; radiocarbon; SL; SO156/2; SO156/3; SO161/5; SO161/5_22SL; Sonne; Southeast Pacific; Species; SPOC
    Type: Dataset
    Format: text/tab-separated-values, 1040 data points
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  • 6
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    (Table S1) Radiocarbon ages in benthonic and planktonic foraminifera of sediment cores from the Chilean margin, beetween ~31°S and ~36°S (2019)
    PANGAEA
    Details
    Publication Date: 2023-07-05
    Keywords: Age, 14C AMS; Age, dated; Age, dated material; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; Center for Marine Environmental Sciences; Deglaciation; DEPTH, sediment/rock; Event label; GeoB7149-2; GeoB7162-6; GeoB7163-7; GeoB7167-6; Gravity corer (Kiel type); International Generic Sample Number; Laboratory code/label; MARUM; off Chile; PUCK; radiocarbon; SL; SO156/2; SO156/3; SO161/5; SO161/5_22SL; Sonne; Southeast Pacific; SPOC; Δ14C
    Type: Dataset
    Format: text/tab-separated-values, 1586 data points
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  • 7
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    Continuous measurements (since 2009) of various CTD instruments deployed at the OBSEA cabled underwater observatory (2019)
    PANGAEA
    Details
    Publication Date: 2023-08-05
    Description: This collection of datasets contains data measured by various CTD instruments which have been deployed at the OBSEA platform since May, 2009. OBSEA is a permanent underwater cabled seabed observatory located in front of the Catalan's coast near Barcelona, at 20 m depth which is used as a test site for different experiments related with marine sensors. It has a sea station and a ground station, which include a surface buoy equipped with weather station and camera and a coastal cabled system (seabed platform). OBSEA is part of the European Multidisciplinary Seafloor Observatory (EMSO) infrastructure and participates as a Coastal Observatory data provider and Test Site on the JERICO-RI. For a comfortable handling of these CTD data they were summarized monthly to one data set each. A complete list of the datasets belonging to this collection can be found at the end of this page.
    Keywords: CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; Operatividad laboratorio submarino obsea; OPOBSEA; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; VALTEC09-1-0059
    Type: Dataset
    Format: application/zip, 128 datasets
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    DATA PANGAEA
  • 8
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    Continuous measurements (since 2010) of weather stations deployed at the OBSEA cabled underwater observatory buoy and shore station (2019)
    PANGAEA
    Details
    Publication Date: 2023-08-05
    Description: This collection of datasets contains data measured by two weather stations related to the OBSEA platform since Feb, 2010. The first weather station is deployed at the OBSEA buoy, the second is located at the OBSEA shore station on top of the UPC building. OBSEA is a permanent underwater cabled seabed observatory located in front of the Catalan's coast near Barcelona, at 20 m depth which is used as a test site for different experiments related with marine sensors. It has a sea station and a ground station, which include a surface buoy equipped with weather station and camera and a coastal cabled system (seabed platform). OBSEA is part of the European Multidisciplinary Seafloor Observatory (EMSO) infrastructure and participates as a Coastal Observatory data provider and Test Site on the JERICO-RI. For a comfortable handling of these weather station data they were summarized monthly to one data set each. A complete list of the datasets belonging to this collection can be found at the end of this page.
    Keywords: CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; Operatividad laboratorio submarino obsea; OPOBSEA; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; VALTEC09-1-0059
    Type: Dataset
    Format: application/zip, 168 datasets
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    DATA PANGAEA
  • 9
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    Continuous current and wave measurements (since 2010) recorded by ADCP deployed at the OBSEA cabled underwater observatory (2019)
    PANGAEA
    Details
    Publication Date: 2023-08-05
    Description: This collection of datasets contains current and wave data measured by an ADCP instrument related to the OBSEA platform since Mar, 2010. OBSEA is a permanent underwater cabled seabed observatory located in front of the Catalan's coast near Barcelona, at 20 m depth which is used as a test site for different experiments related with marine sensors. It has a sea station and a ground station, which include a surface buoy equipped with weather station and camera and a coastal cabled system (seabed platform). OBSEA is part of the European Multidisciplinary Seafloor Observatory (EMSO) infrastructure and participates as a Coastal Observatory data provider and Test Site on the JERICO-RI. For a comfortable handling of these weather station data they were summarized monthly to one data set each. A complete list of the datasets belonging to this collection can be found at the end of this page.
    Keywords: CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; Operatividad laboratorio submarino obsea; OPOBSEA; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; VALTEC09-1-0059
    Type: Dataset
    Format: application/zip, 122 datasets
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    DATA PANGAEA
  • 10
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    CTD (SBE 37 SMP) measurements collected at the OBSEA underwater observatory during July, 2009 (2019)
    PANGAEA
    Details
    Publication Date: 2023-08-05
    Keywords: Conductivity; CTD, SEA-BIRD SBE 37-SMP MicroCAT; CTM2008-04517; CTM2009-06269-E; CTM2010-11955-E/MAR; DATE/TIME; EMSODEV; EMSO implementation and operation: DEVelopment of instrument module; EMSO-Link; ES5110020; Fixed Point Open Ocean Observatories Network; FixO3; Implementation of the Strategy to Ensure the EMSO ERICs Long-term Sustainability; Instalació de sensors en observatorio submari expansible OBSEA; Instalacion de equipos en superfície para la ampliación de las prestaciones del observatorio submarino obsea; Instrumentación y tecnologías aplicadas al estudio, caracterización y explotación sostenible del medio marino; Integración de sensores para monitorización submarina en una red con sincronización temporal; Interoperabilidad e instrumentación de plataformas autónomas marinas para la monitorización sísmica; Interoperabilidad en redes de sensores marinos y ambientales; Interoperabilitat en xarxes de sensors marins i ambientals; INTIMAS; INTMARSIS; JERICO-NEXT; Joint European Research Infrastructure network for Coastal Observatory – Novel European eXpertise for coastal observaTories; MarInTech; MELOA; MeteoMet2; Metrology for essential climate variables; Multi-purpose/Multi-sensor Extra Light Oceanography Apparatua; NeXOS; Next generation, Cost-effective, Compact, Multifunctional Web Enabled Ocean Sensor Systems Empowering Marine, Maritime and Fisheries Management; Nuevas tecnologías para el seguimiento de la acidificación marina en el espacio natural Costa del Garraf; OBSEA:OBSEA:2009-05; Operatividad laboratorio submarino obsea; OPOBSEA; Pressure, water; PT2009-0080; Redes de sensores submarinos acústicos aplicados al seguimiento de especies de interes comercial; Redes de sensores submarinos autónomos y cableados aplicados a la monitorización remota de indicadores biológicos; RESBAC; RESBIO; Salinity; SARTI-MAR; SINEOS; Sismòmetre marí digital amb connexió per cable; Sistemas inalambricos para la extension de observatorios submarinos; Sistemes dAdquisició Remota de dades i Tractament de la Informació en el Medi Marí; Sound velocity in water; Temperature, water; VALTEC09-1-0059
    Type: Dataset
    Format: text/tab-separated-values, 1322040 data points
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    DATA PANGAEA
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