Thermal expansion, compressibility, and local structure of fluorides and oxyfluorides with the rhenium trioxide structure

Morelock, Cody Reeves

Title:

Thermal expansion, compressibility, and local structure of fluorides and oxyfluorides with the rhenium trioxide structure

dc.contributor.advisor	Wilkinson, Angus P.
dc.contributor.author	Morelock, Cody Reeves
dc.contributor.committeeMember	Jones, Christopher W.
dc.contributor.committeeMember	Perry, Joseph W.
dc.contributor.committeeMember	White, Mary A.
dc.contributor.committeeMember	Zhang, Z. J.
dc.contributor.department	Chemistry and Biochemistry
dc.date.accessioned	2015-01-12T20:44:12Z
dc.date.available	2015-01-12T20:44:12Z
dc.date.created	2014-12
dc.date.issued	2014-08-12
dc.date.submitted	December 2014
dc.date.updated	2015-01-12T20:44:12Z
dc.description.abstract	The simple cubic ReO₃-type framework has all of the key features required for negative thermal expansion (NTE) arising from the transverse thermal motion of bridging atoms and rotation of rigid polyhedra. Although ReO₃ itself only displays low NTE below ambient temperature, there is a potentially large family of isostructural fluorides and oxyfluorides that could display NTE. However, the coefficients of thermal expansion (CTE) of ReO₃-type materials range from strongly positive to strongly negative. Through extensive use of in situ synchrotron diffraction, this thesis examines the thermal expansion of several ReO₃-type fluorides and oxyfluorides, demonstrating the effects on CTE and related properties of both cation and anion substitution and the disorder produced by these structural changes.
dc.description.degree	Ph.D.
dc.format.mimetype	application/pdf
dc.identifier.uri	http://hdl.handle.net/1853/53000
dc.language.iso	en_US
dc.publisher	Georgia Institute of Technology
dc.subject	Thermal expansion
dc.subject	Local structure
dc.subject	X-ray diffraction
dc.subject	Fluorides
dc.subject	Oxyfluorides
dc.subject	Synchrotron diffraction
dc.title	Thermal expansion, compressibility, and local structure of fluorides and oxyfluorides with the rhenium trioxide structure
dc.type	Text
dc.type.genre	Dissertation
dspace.entity.type	Publication
local.contributor.advisor	Wilkinson, Angus P.
local.contributor.corporatename	School of Chemistry and Biochemistry
local.contributor.corporatename	College of Sciences
relation.isAdvisorOfPublication	b4ceed27-62cd-4844-9990-10f98af2730f
relation.isOrgUnitOfPublication	f1725b93-3ab8-4c47-a4c3-3596c03d6f1e
relation.isOrgUnitOfPublication	85042be6-2d68-4e07-b384-e1f908fae48a
thesis.degree.level	Doctoral