Charge ordering temperatures of Bi1-xSrxMnO3 (0.45 &#8804; x &#8804; 0.8)

B. H. Kim; J. S. Kim; M. S. Kim; C. J. Zhang; K. H. Kim; B. G. Kim; H. C. Kim; Y. W. Park

doi:10.1117/12.624690

10 September 2005 Charge ordering temperatures of Bi_1-xSr_xMnO₃ (0.45 ⩽ x ⩽ 0.8)

B. H. Kim, J. S. Kim, M. S. Kim, C. J. Zhang, K. H. Kim, B. G. Kim, H. C. Kim, Y. W. Park

Proceedings Volume 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering; 59322F (2005) https://doi.org/10.1117/12.624690
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We have investigated the charge ordering phenomenon from the temperature dependence of inverse susceptibility, resistivity, and thermoelectric power (TEP) for Bi_1-xSr_xMnO₃ (BSMO) from 300 K to 700 K. At high temperatures, susceptibility follows Curie-Weiss law. The resistivity data indicate insulating behavior of BSMO. TEP (S(T)) value is negative and weakly temperature-dependent in the high temperature regime. The slope of TEP changes dramatically near the charge ordering temperature (Τ_CO), indicating an increase of energy gap due to the charge ordering. In the vicinity of Τ_CO, thermal hysteresis is observed in TEP data as well as in the resistivity data, which is consistent with the nature of the martensitic transition of the charge ordering phenomena. From this hysteretic behavior, we estimated Τ_CO. As Sr concentration increases, Τ_CO shifts to lower temperature from Τ_CO ~ 490 K for x = 0.45 to Τ_CO ~ 435 K for x = 0.8, and the thermal hysteretic behavior becomes less pronounced. The electrical transport properties have been discussed in terms of carrier localization due to charge ordering transition accompanied by the local lattice distortions.

Citation Download Citation

B. H. Kim, J. S. Kim, M. S. Kim, C. J. Zhang, K. H. Kim, B. G. Kim, H. C. Kim, and Y. W. Park "Charge ordering temperatures of Bi_1-xSr_xMnO₃ (0.45 ⩽ x ⩽ 0.8)", Proc. SPIE 5932, Strongly Correlated Electron Materials: Physics and Nanoengineering, 59322F (10 September 2005); https://doi.org/10.1117/12.624690

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available