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Non-Debye excess heat capacity and boson peak of binary lithium borate glasses

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Title: Non-Debye excess heat capacity and boson peak of binary lithium borate glasses
Authors: Matsuda, Yu1 hiiro_s721@yahoo.co.jp, Kawaji, Hitoshi2, Atake, Tooru2, Yamamura, Yasuhisa1, Yasuzuka, Shuma1, Saito, Kazuya1, Kojima, Seiji1 kojima@bk.tsukuba.ac.jp
Source: Journal of Non-Crystalline Solids. Jan2011, Vol. 357 Issue 2, p534-537. 4p.
Subjects: Bosons, Lithium, Borate crystals, Neutron scattering, Calorimeters, Low temperatures, Vibrational spectra
Abstract: Abstract: The non-Debye excess heat capacities of binary lithium borate glasses with different Li2O compositions of x =8, 14 and 22 (mol%) are investigated to understand origin of the boson peak. The low-temperature heat capacities are measured between 2 and 50K by a relaxation calorimeter. The experimental non-Debye heat capacities with x =14 is successfully reproduced using the excess vibrational density of states measured by inelastic neutron scattering. This finding indicates that the non-Debye heat capacities of lithium borate glasses originate from the excess vibrational density of states measureable by inelastic neutron scattering. Moreover, it is demonstrated that all of the excess heat capacity spectra lie on a single master curve by the scaling using boson peak temperature and intensity. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Non-Crystalline Solids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 57511787
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Non-Debye excess heat capacity and boson peak of binary lithium borate glasses
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  Data: <searchLink fieldCode="AR" term="%22Matsuda%2C+Yu%22">Matsuda, Yu</searchLink><relatesTo>1</relatesTo><i> hiiro_s721@yahoo.co.jp</i><br /><searchLink fieldCode="AR" term="%22Kawaji%2C+Hitoshi%22">Kawaji, Hitoshi</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Atake%2C+Tooru%22">Atake, Tooru</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Yamamura%2C+Yasuhisa%22">Yamamura, Yasuhisa</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Yasuzuka%2C+Shuma%22">Yasuzuka, Shuma</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Saito%2C+Kazuya%22">Saito, Kazuya</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Kojima%2C+Seiji%22">Kojima, Seiji</searchLink><relatesTo>1</relatesTo><i> kojima@bk.tsukuba.ac.jp</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Non-Crystalline+Solids%22">Journal of Non-Crystalline Solids</searchLink>. Jan2011, Vol. 357 Issue 2, p534-537. 4p.
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  Data: <searchLink fieldCode="DE" term="%22Bosons%22">Bosons</searchLink><br /><searchLink fieldCode="DE" term="%22Lithium%22">Lithium</searchLink><br /><searchLink fieldCode="DE" term="%22Borate+crystals%22">Borate crystals</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+scattering%22">Neutron scattering</searchLink><br /><searchLink fieldCode="DE" term="%22Calorimeters%22">Calorimeters</searchLink><br /><searchLink fieldCode="DE" term="%22Low+temperatures%22">Low temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Vibrational+spectra%22">Vibrational spectra</searchLink>
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  Data: Abstract: The non-Debye excess heat capacities of binary lithium borate glasses with different Li2O compositions of x =8, 14 and 22 (mol%) are investigated to understand origin of the boson peak. The low-temperature heat capacities are measured between 2 and 50K by a relaxation calorimeter. The experimental non-Debye heat capacities with x =14 is successfully reproduced using the excess vibrational density of states measured by inelastic neutron scattering. This finding indicates that the non-Debye heat capacities of lithium borate glasses originate from the excess vibrational density of states measureable by inelastic neutron scattering. Moreover, it is demonstrated that all of the excess heat capacity spectra lie on a single master curve by the scaling using boson peak temperature and intensity. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Journal of Non-Crystalline Solids is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.jnoncrysol.2010.06.066
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      – Code: eng
        Text: English
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        PageCount: 4
        StartPage: 534
    Subjects:
      – SubjectFull: Bosons
        Type: general
      – SubjectFull: Lithium
        Type: general
      – SubjectFull: Borate crystals
        Type: general
      – SubjectFull: Neutron scattering
        Type: general
      – SubjectFull: Calorimeters
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      – SubjectFull: Low temperatures
        Type: general
      – SubjectFull: Vibrational spectra
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      – TitleFull: Non-Debye excess heat capacity and boson peak of binary lithium borate glasses
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              Text: Jan2011
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              Y: 2011
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