Sharp rigid to floppy phase transition induced by dangling ends in a network glass

Y. Wang; J. Wells; D. G. Georgiev; P. Boolchand; Koblar Jackson; M. Micoulaut

doi:10.1103/PhysRevLett.87.185503

Sharp rigid to floppy phase transition induced by dangling ends in a network glass

Y. Wang, J. Wells, D. G. Georgiev, P. Boolchand, Koblar Jackson, M. Micoulaut

Research output: Contribution to journal › Article › peer-review

Abstract

The count of Lagrangian bonding constraints n_c(y) in ternary Ge₃₅S_75-yI_y glasses (0 < y < 0.30) is established from the molecular structure using Raman scattering and first-principles cluster calculations. The results show that n_c(y) decreases to 3 as y increases close to y_c = 0.162(3), where a sharply defined global minimum in the nonreversing heat flow, ΔH_nr(y) near T_g, is observed in scanning calorimetry. Here we have a rigidity transition induced by I dangling ends, with its sharpness resulting from the absence of self-organization in the random network.

Original language	English
Pages (from-to)	185503-1-185503-4
Journal	Physical Review Letters
Volume	87
Issue number	18
DOIs	https://doi.org/10.1103/PhysRevLett.87.185503
State	Published - 2001
Externally published	Yes

Access to Document

10.1103/PhysRevLett.87.185503

Cite this

@article{1d80ab69a4264c5d9581ada5059d9ead,

title = "Sharp rigid to floppy phase transition induced by dangling ends in a network glass",

abstract = "The count of Lagrangian bonding constraints nc(y) in ternary Ge35S75-yIy glasses (0 < y < 0.30) is established from the molecular structure using Raman scattering and first-principles cluster calculations. The results show that nc(y) decreases to 3 as y increases close to yc = 0.162(3), where a sharply defined global minimum in the nonreversing heat flow, ΔHnr(y) near Tg, is observed in scanning calorimetry. Here we have a rigidity transition induced by I dangling ends, with its sharpness resulting from the absence of self-organization in the random network.",

author = "Y. Wang and J. Wells and Georgiev, {D. G.} and P. Boolchand and Koblar Jackson and M. Micoulaut",

year = "2001",

doi = "10.1103/PhysRevLett.87.185503",

language = "English",

volume = "87",

pages = "185503--1--185503--4",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "Physical Review Letters",

number = "18",

}

TY - JOUR

T1 - Sharp rigid to floppy phase transition induced by dangling ends in a network glass

AU - Wang, Y.

AU - Wells, J.

AU - Georgiev, D. G.

AU - Boolchand, P.

AU - Jackson, Koblar

AU - Micoulaut, M.

PY - 2001

Y1 - 2001

N2 - The count of Lagrangian bonding constraints nc(y) in ternary Ge35S75-yIy glasses (0 < y < 0.30) is established from the molecular structure using Raman scattering and first-principles cluster calculations. The results show that nc(y) decreases to 3 as y increases close to yc = 0.162(3), where a sharply defined global minimum in the nonreversing heat flow, ΔHnr(y) near Tg, is observed in scanning calorimetry. Here we have a rigidity transition induced by I dangling ends, with its sharpness resulting from the absence of self-organization in the random network.

AB - The count of Lagrangian bonding constraints nc(y) in ternary Ge35S75-yIy glasses (0 < y < 0.30) is established from the molecular structure using Raman scattering and first-principles cluster calculations. The results show that nc(y) decreases to 3 as y increases close to yc = 0.162(3), where a sharply defined global minimum in the nonreversing heat flow, ΔHnr(y) near Tg, is observed in scanning calorimetry. Here we have a rigidity transition induced by I dangling ends, with its sharpness resulting from the absence of self-organization in the random network.

UR - http://www.scopus.com/inward/record.url?scp=85037247594&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.87.185503

DO - 10.1103/PhysRevLett.87.185503

M3 - Article

AN - SCOPUS:85037247594

VL - 87

SP - 185503-1-185503-4

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 18

ER -

Sharp rigid to floppy phase transition induced by dangling ends in a network glass

Abstract

Access to Document

Other files and links

Fingerprint

Cite this