Relaxations in mixed alkali metaphosphate glass

Peter F. Green, David L. Sidebottom, Richard K. Brow

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A study of the materials response to time-dependent mechanical and electrical perturbations was performed on a mixed alkali, sodium and lithium, metaphosphate glass over a range of overlapping frequencies. The characteristic timescale that characterizes the mechanical relaxations, τμ, was observed to be two orders of magnitude slower than the characteristic response, τσ, of the system to electrical perturbations. This is unlike the situation in single alkali glasses where τμ and τσ are equivalent. Interestingly, it was also noted that the breadth of the distribution of relaxation times that characterize the response of the mixed mobile ion system is slightly narrower than that of the single alkali (Li) metaphosphate. A comparison of the characteristic timescales, τ1, that describes the nuclear magnetic resonance spin-lattice relaxation time response revealed that τ1 is comparable to τσ. This is also by contrast with the single alkali case where τσ is approximately one order of magnitude faster than τ1. However, as observed in single alkali glasses, the breadth of the distribution of relaxation times that characterize the loss processes of the mechanical response is considerably larger than that of the electrical response.

Original languageEnglish
Pages (from-to)1353-1362
Number of pages10
JournalJournal of Non-Crystalline Solids
Volume172-174
Issue numberPART 2
DOIs
StatePublished - Sep 1 1994

Fingerprint

Alkalies
Relaxation time
alkalies
Glass
glass
relaxation time
Anelastic relaxation
Spin-lattice relaxation
Lithium
perturbation
Sodium
Nuclear magnetic resonance
time response
spin-lattice relaxation
Ions
lithium
sodium
nuclear magnetic resonance
ions

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Electronic, Optical and Magnetic Materials

Cite this

Relaxations in mixed alkali metaphosphate glass. / Green, Peter F.; Sidebottom, David L.; Brow, Richard K.

In: Journal of Non-Crystalline Solids, Vol. 172-174, No. PART 2, 01.09.1994, p. 1353-1362.

Research output: Contribution to journalArticle

Green, Peter F. ; Sidebottom, David L. ; Brow, Richard K. / Relaxations in mixed alkali metaphosphate glass. In: Journal of Non-Crystalline Solids. 1994 ; Vol. 172-174, No. PART 2. pp. 1353-1362.
@article{a2331ab2118e427190f6087a07ecbb8c,
title = "Relaxations in mixed alkali metaphosphate glass",
abstract = "A study of the materials response to time-dependent mechanical and electrical perturbations was performed on a mixed alkali, sodium and lithium, metaphosphate glass over a range of overlapping frequencies. The characteristic timescale that characterizes the mechanical relaxations, τμ, was observed to be two orders of magnitude slower than the characteristic response, τσ, of the system to electrical perturbations. This is unlike the situation in single alkali glasses where τμ and τσ are equivalent. Interestingly, it was also noted that the breadth of the distribution of relaxation times that characterize the response of the mixed mobile ion system is slightly narrower than that of the single alkali (Li) metaphosphate. A comparison of the characteristic timescales, τ1, that describes the nuclear magnetic resonance spin-lattice relaxation time response revealed that τ1 is comparable to τσ. This is also by contrast with the single alkali case where τσ is approximately one order of magnitude faster than τ1. However, as observed in single alkali glasses, the breadth of the distribution of relaxation times that characterize the loss processes of the mechanical response is considerably larger than that of the electrical response.",
author = "Green, {Peter F.} and Sidebottom, {David L.} and Brow, {Richard K.}",
year = "1994",
month = "9",
day = "1",
doi = "10.1016/0022-3093(94)90663-7",
language = "English",
volume = "172-174",
pages = "1353--1362",
journal = "Journal of Non-Crystalline Solids",
issn = "0022-3093",
publisher = "Elsevier",
number = "PART 2",

}

TY - JOUR

T1 - Relaxations in mixed alkali metaphosphate glass

AU - Green, Peter F.

AU - Sidebottom, David L.

AU - Brow, Richard K.

PY - 1994/9/1

Y1 - 1994/9/1

N2 - A study of the materials response to time-dependent mechanical and electrical perturbations was performed on a mixed alkali, sodium and lithium, metaphosphate glass over a range of overlapping frequencies. The characteristic timescale that characterizes the mechanical relaxations, τμ, was observed to be two orders of magnitude slower than the characteristic response, τσ, of the system to electrical perturbations. This is unlike the situation in single alkali glasses where τμ and τσ are equivalent. Interestingly, it was also noted that the breadth of the distribution of relaxation times that characterize the response of the mixed mobile ion system is slightly narrower than that of the single alkali (Li) metaphosphate. A comparison of the characteristic timescales, τ1, that describes the nuclear magnetic resonance spin-lattice relaxation time response revealed that τ1 is comparable to τσ. This is also by contrast with the single alkali case where τσ is approximately one order of magnitude faster than τ1. However, as observed in single alkali glasses, the breadth of the distribution of relaxation times that characterize the loss processes of the mechanical response is considerably larger than that of the electrical response.

AB - A study of the materials response to time-dependent mechanical and electrical perturbations was performed on a mixed alkali, sodium and lithium, metaphosphate glass over a range of overlapping frequencies. The characteristic timescale that characterizes the mechanical relaxations, τμ, was observed to be two orders of magnitude slower than the characteristic response, τσ, of the system to electrical perturbations. This is unlike the situation in single alkali glasses where τμ and τσ are equivalent. Interestingly, it was also noted that the breadth of the distribution of relaxation times that characterize the response of the mixed mobile ion system is slightly narrower than that of the single alkali (Li) metaphosphate. A comparison of the characteristic timescales, τ1, that describes the nuclear magnetic resonance spin-lattice relaxation time response revealed that τ1 is comparable to τσ. This is also by contrast with the single alkali case where τσ is approximately one order of magnitude faster than τ1. However, as observed in single alkali glasses, the breadth of the distribution of relaxation times that characterize the loss processes of the mechanical response is considerably larger than that of the electrical response.

UR - http://www.scopus.com/inward/record.url?scp=0028498826&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028498826&partnerID=8YFLogxK

U2 - 10.1016/0022-3093(94)90663-7

DO - 10.1016/0022-3093(94)90663-7

M3 - Article

AN - SCOPUS:0028498826

VL - 172-174

SP - 1353

EP - 1362

JO - Journal of Non-Crystalline Solids

JF - Journal of Non-Crystalline Solids

SN - 0022-3093

IS - PART 2

ER -