Zero thermal expansion in YbGaGe due to an electronic valence transition

James R. Salvador, Fu Guo, Tim Hogan, Mercouri G Kanatzidis

Research output: Contribution to journalArticle

147 Citations (Scopus)

Abstract

Most materials expand upon heating. Although rare, some materials expand on cooling, and are said to exhibit negative thermal expansion (NTE); but the property is exhibited in only one crystallographic direction. Such materials include silicon and germanium at very low temperature (2O3 (ref. 4) and certain molecular networks. NTE materials can be combined with materials demonstrating a positive thermal expansion coefficient to fabricate composites exhibiting an overall zero thermal expansion (ZTE). ZTE materials are useful because they do not undergo thermal shock on rapid heating or cooling. The need for such composites could be avoided if ZTE materials were available in a pure form. Here we show that an electrically conductive intermetallic compound, YbGaGe, can exhibit nearly ZTE-that is, negligible volume change between 100 and 400 K. We suggest that this response is due to a temperature-induced valence transition in the Yb atoms. ZTE materials are desirable to prevent or reduce resulting strain or internal stresses in systems subject to large temperature fluctuations, such as in space applications and thermomechanical actuators.

Original languageEnglish
Pages (from-to)702-705
Number of pages4
JournalNature
Volume425
Issue number6959
DOIs
Publication statusPublished - Oct 16 2003

Fingerprint

Hot Temperature
Heating
Temperature
Germanium
Silicon
Shock

ASJC Scopus subject areas

  • General

Cite this

Zero thermal expansion in YbGaGe due to an electronic valence transition. / Salvador, James R.; Guo, Fu; Hogan, Tim; Kanatzidis, Mercouri G.

In: Nature, Vol. 425, No. 6959, 16.10.2003, p. 702-705.

Research output: Contribution to journalArticle

Salvador, James R. ; Guo, Fu ; Hogan, Tim ; Kanatzidis, Mercouri G. / Zero thermal expansion in YbGaGe due to an electronic valence transition. In: Nature. 2003 ; Vol. 425, No. 6959. pp. 702-705.
@article{ac2d355504e94074abe7ace2de696650,
title = "Zero thermal expansion in YbGaGe due to an electronic valence transition",
abstract = "Most materials expand upon heating. Although rare, some materials expand on cooling, and are said to exhibit negative thermal expansion (NTE); but the property is exhibited in only one crystallographic direction. Such materials include silicon and germanium at very low temperature (2O3 (ref. 4) and certain molecular networks. NTE materials can be combined with materials demonstrating a positive thermal expansion coefficient to fabricate composites exhibiting an overall zero thermal expansion (ZTE). ZTE materials are useful because they do not undergo thermal shock on rapid heating or cooling. The need for such composites could be avoided if ZTE materials were available in a pure form. Here we show that an electrically conductive intermetallic compound, YbGaGe, can exhibit nearly ZTE-that is, negligible volume change between 100 and 400 K. We suggest that this response is due to a temperature-induced valence transition in the Yb atoms. ZTE materials are desirable to prevent or reduce resulting strain or internal stresses in systems subject to large temperature fluctuations, such as in space applications and thermomechanical actuators.",
author = "Salvador, {James R.} and Fu Guo and Tim Hogan and Kanatzidis, {Mercouri G}",
year = "2003",
month = "10",
day = "16",
doi = "10.1038/nature02011",
language = "English",
volume = "425",
pages = "702--705",
journal = "Nature",
issn = "0028-0836",
publisher = "Nature Publishing Group",
number = "6959",

}

TY - JOUR

T1 - Zero thermal expansion in YbGaGe due to an electronic valence transition

AU - Salvador, James R.

AU - Guo, Fu

AU - Hogan, Tim

AU - Kanatzidis, Mercouri G

PY - 2003/10/16

Y1 - 2003/10/16

N2 - Most materials expand upon heating. Although rare, some materials expand on cooling, and are said to exhibit negative thermal expansion (NTE); but the property is exhibited in only one crystallographic direction. Such materials include silicon and germanium at very low temperature (2O3 (ref. 4) and certain molecular networks. NTE materials can be combined with materials demonstrating a positive thermal expansion coefficient to fabricate composites exhibiting an overall zero thermal expansion (ZTE). ZTE materials are useful because they do not undergo thermal shock on rapid heating or cooling. The need for such composites could be avoided if ZTE materials were available in a pure form. Here we show that an electrically conductive intermetallic compound, YbGaGe, can exhibit nearly ZTE-that is, negligible volume change between 100 and 400 K. We suggest that this response is due to a temperature-induced valence transition in the Yb atoms. ZTE materials are desirable to prevent or reduce resulting strain or internal stresses in systems subject to large temperature fluctuations, such as in space applications and thermomechanical actuators.

AB - Most materials expand upon heating. Although rare, some materials expand on cooling, and are said to exhibit negative thermal expansion (NTE); but the property is exhibited in only one crystallographic direction. Such materials include silicon and germanium at very low temperature (2O3 (ref. 4) and certain molecular networks. NTE materials can be combined with materials demonstrating a positive thermal expansion coefficient to fabricate composites exhibiting an overall zero thermal expansion (ZTE). ZTE materials are useful because they do not undergo thermal shock on rapid heating or cooling. The need for such composites could be avoided if ZTE materials were available in a pure form. Here we show that an electrically conductive intermetallic compound, YbGaGe, can exhibit nearly ZTE-that is, negligible volume change between 100 and 400 K. We suggest that this response is due to a temperature-induced valence transition in the Yb atoms. ZTE materials are desirable to prevent or reduce resulting strain or internal stresses in systems subject to large temperature fluctuations, such as in space applications and thermomechanical actuators.

UR - http://www.scopus.com/inward/record.url?scp=0142152374&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0142152374&partnerID=8YFLogxK

U2 - 10.1038/nature02011

DO - 10.1038/nature02011

M3 - Article

VL - 425

SP - 702

EP - 705

JO - Nature

JF - Nature

SN - 0028-0836

IS - 6959

ER -