Structural Order–Disorder Transformations Monitored by X-ray Diffraction and Photoluminescence

E. Longo
Instituto de Química, Universidade Estadual Paulista, Araraquara, São Paulo, Brazil
J. W. M. Espinosa and A. G. Souza
CCEN, Departamento de Química, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil
R. C. Lima , E. C. Paris and E. R. Leite
Departamento de Química, Universidade Federal de São Carlos, São Carlos, São Paulo, Brazil
J. Chem. Educ., 2007, 84 (5), p 814
DOI: 10.1021/ed084p814
Publication Date (Web): May 1, 2007

Abstract

This experiment introduces to students the X-ray diffraction and photoluminescence spectroscopy techniques as tools to verify structural order–disorder transformations in solid-state materials. To achieve this goal, Sm3+ ions were added to a PbTiO3 lattice by soft chemical synthesis—the so-called polymeric precursor method. After a controlled heat treatment, the presence of these ions in the PbTiO3 matrix revealed the three order states of solid matter: the short- (disordered structure), intermediate-, and long-range (crystalline or ordered structure) states.

Keywords (Audience):

Upper-Division Undergraduate

Keywords (Domain):

Interdisciplinary / Multidisciplinary

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Materials Science
View: Hi-Res PDF | PDF w/ Links

Tools

SciFinder Links

SciFinder subscribers: Click to sign in | Not a SciFinder subscriber? Learn more at www.cas.org

Explore by:

History

  • Received: August 03, 2009

Recommend & Share

  • Share on ACS NetworkACS Network
  • Add to FacebookFacebook
  • Tweet ThisTweet This
  • Add to CiteULikeCiteULike
  • Add to NewsvineNewsvine
  • Digg ThisDigg This
  • Add to DeliciousDelicious

Related Content