Perturbed-angular-correlation spectroscopy: evidence for probe-dopant interactions in Ca-doped barium titanate

Perturbed-angular-correlation (PAC) spectroscopy was used to measure nuclear-electric-quadrupole interactions in the orthorhombically-distorted perovskites SrRuO, and CaRuO, over temperatures ranging from laboratory to very high temperatures. At 77 K, PAC spectroscopy was used to measure combined electric-quadrupole and magnetic-dipole interactions in magnetically ordered SrRu03 and pure electric-quadrupole interactions in paramagnetic CaRu03. The "'In~"'Cd PAC probe was used for these measurements, and it substituted into the Ru site in SrRu03 and very likely into the Ru site in CaRu03. The temperature dependence of the electric-field-gradient (EFG) parameters for SrRu03 indicates the onset of a structural phase transition at approximately 800 K. The presence of this transition indicates that the laboratory-temperature structure of SrRu03 has lower-than-cubic symmetry. At very high temperatures) 1600 K, the structure of CaRu03, as given by the EFG parameters, becomes very similar to the laboratory-temperature structure of SrRu03. At 77 K in SrRu03, the measured Ru-site supertransferred hyperfine field is 39+3 kOe. Using "Ru and "Fe Mossbauer-effect information and other ' "In~"'Cd PAC measurements, the magnetic hyperfine fields at the Ru site in SrRu03 and at the Fe site in PrFe03 are compared. 4.2 K SR is magnetically ordered and CR is not. Thus the initial report of antiferromagnetism in CR is incorrect. Both the high-temperature crystal structures of SR and CR and the low-temperature magnetic properties, pri

show abstract

Anomalous crystal chemistries of the→111111Cd and
Adams
¹
,
Catchen
²

1994
Phys. Rev. B
42
6
20
0
View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Perturbed-angular-correlation spectroscopy: evidence for probe-dopant interactions in Ca-doped barium titanate

Cited by 3 publications

References 8 publications

Critical effects in BaTiO₃measured by perturbed-angular-correlation spectroscopy

Critical effects in BaTiO₃measured by perturbed-angular-correlation spectroscopy

High-temperature phase transitions and low-temperature magnetic ordering inSrRuO3andCaRuO3
Catchen
¹
,
Rearick
²
,
Schlom
³

1994
Phys. Rev. B
42
3
12
0
View full text Add to dashboard Cite

Anomalous crystal chemistries of the→111111Cd and
Adams
¹
,
Catchen
²

1994
Phys. Rev. B
42
6
20
0
View full text Add to dashboard Cite

Contact Info

Product

Resources

About

Perturbed-angular-correlation spectroscopy: evidence for probe-dopant interactions in Ca-doped barium titanate

Cited by 3 publications

References 8 publications

Critical effects in BaTiO3measured by perturbed-angular-correlation spectroscopy

Critical effects in BaTiO3measured by perturbed-angular-correlation spectroscopy

High-temperature phase transitions and low-temperature magnetic ordering inSrRuO3andCaRuO3Catchen1, Rearick2, Schlom3 1994Phys. Rev. B423120View full textAdd to dashboardCite

Anomalous crystal chemistries of the→111111Cd andAdams1, Catchen2 1994Phys. Rev. B426200View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Critical effects in BaTiO₃measured by perturbed-angular-correlation spectroscopy

Critical effects in BaTiO₃measured by perturbed-angular-correlation spectroscopy

High-temperature phase transitions and low-temperature magnetic ordering inSrRuO3andCaRuO3
Catchen
¹
,
Rearick
²
,
Schlom
³

1994
Phys. Rev. B
42
3
12
0
View full text Add to dashboard Cite

Anomalous crystal chemistries of the→111111Cd and
Adams
¹
,
Catchen
²

1994
Phys. Rev. B
42
6
20
0
View full text Add to dashboard Cite