Moscow Univ. Phys.

2009

DOI: 10.3103/s0027134909030242

|View full text |Cite

|

Sign up to set email alerts

|

Peculiarities of magnetization in natural ferromagnetics

¹

,

В. И. Максимочкин

²

,

³

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Introduction5

Citation Types

Supporting

0

Mentioning

7

Contrasting

0

Year Published

2013

2013

2013

2013

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(7 citation statements)

References 3 publications

Supporting

0

Mentioning

7

Contrasting

0

Order By: Relevance

“…This luminescence is excited above the intrinsic absorption threshold at 6.93 eV, belonging to the low energy side of the band at 8.8 eV. The threshold obeys the Urbach-Toyozawa rule [3,4] witnessed on direct creation of STEs. The specific nature of the triplet-singlet transitions was found for the STE luminescence in ScPO 4 based on the discovery of an effect related to triplet splitting in zero magnetic fields [3,4]-i.e.…”

Section: Introductionmentioning

confidence: 92%

“…The threshold obeys the Urbach-Toyozawa rule [3,4] witnessed on direct creation of STEs. The specific nature of the triplet-singlet transitions was found for the STE luminescence in ScPO 4 based on the discovery of an effect related to triplet splitting in zero magnetic fields [3,4]-i.e. a strong increase in the luminescence duration that is observed without a corresponding change in intensity.…”

Section: Introductionmentioning

confidence: 93%

“…a strong increase in the luminescence duration that is observed without a corresponding change in intensity. This luminescence is thermally quenched above 400 K [3,4]. For a triplet state that is split in zero magnetic fields, the observation of faster components in addition to slow components is a characteristic feature.…”

Section: Introductionmentioning

confidence: 94%

“…ScPO 4 has a tetragonal zircon-type structure, and this material is frequently grouped together with the rare-earth orthophosphates (particularly those in the second half of the transition series) as well as tetragonal YPO 4 . The orthophosphates in the first half of the rare-earth transition series have the monoclinic monazite structure and have been considered as a host ceramic material for radioactive waste storage [1].…”

Section: Introductionmentioning

confidence: 99%

“…The unit cell of the ScPO 4 zircon structure consists of four formula units, where each phosphorus atom is bonded to four nearby oxygen atoms, and each of the Sc atoms is surrounded by eight oxygen atoms [2]. The self-trapped exciton (STE) in ScPO 4 was initially described by Trukhin and Boatner [3,4]. It exhibits a luminescence band in the UV range situated at ∼210 nm (∼5.6-5.9 eV).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Ultraviolet luminescence of ScPO₄, AlPO₄and GaPO₄crystals

et al. 2013

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The luminescence of self-trapped excitons (STEs) was previously observed and described for the case of tetragonal-symmetry ScPO4 single crystals. The subject band in this material is situated in the UV spectral range of ∼210 nm or ∼5.8 eV. In the present work, we are both expanding this earlier luminescence study and seeking to identify similar luminescence phenomena in other orthophosphate crystals, i.e., AlPO4 and GaPO4. These efforts have proven to be successful--in spite of the structural differences between these materials and ScPO4. Specifically we have found that for AlPO4 and GaPO4, in addition to an α-quartz-like STE, there is a UV luminescence band that is similar in position and decay properties to that of ScPO4 crystals. Potentially this represents an STE in AlPO4 and GaPO4 crystals that is analogous to the STE of ScPO4 and other orthophosphates. The decay kinetics of the UV luminescence of ScPO4 was studied over a wide temperature range from 8 to 300 K, and they exhibited some unusual decay characteristics when subjected to pulses from an F2 excimer laser (157 nm). These features could be ascribed to a triplet state of the STE that is split in a zero magnetic field. A fast decay of the STE was detected as well, and therefore, we conclude that, in addition to the slow luminescence corresponding to a transition from the triplet state, there are singlet-singlet transitions of the STE. Time-resolved spectra of the slow and fast decay exhibit a small shift (∼0.15 eV) indicating that the singlet-triplet splitting is small and the corresponding wavefunction of the STE is widely distributed over the atoms of the ScPO4 crystal where the STE is created.

“…This luminescence is excited above the intrinsic absorption threshold at 6.93 eV, belonging to the low energy side of the band at 8.8 eV. The threshold obeys the Urbach-Toyozawa rule [3,4] witnessed on direct creation of STEs. The specific nature of the triplet-singlet transitions was found for the STE luminescence in ScPO 4 based on the discovery of an effect related to triplet splitting in zero magnetic fields [3,4]-i.e.…”

Section: Introductionmentioning

confidence: 92%

“…The threshold obeys the Urbach-Toyozawa rule [3,4] witnessed on direct creation of STEs. The specific nature of the triplet-singlet transitions was found for the STE luminescence in ScPO 4 based on the discovery of an effect related to triplet splitting in zero magnetic fields [3,4]-i.e. a strong increase in the luminescence duration that is observed without a corresponding change in intensity.…”

Section: Introductionmentioning

confidence: 93%

“…a strong increase in the luminescence duration that is observed without a corresponding change in intensity. This luminescence is thermally quenched above 400 K [3,4]. For a triplet state that is split in zero magnetic fields, the observation of faster components in addition to slow components is a characteristic feature.…”

Section: Introductionmentioning

confidence: 94%

“…ScPO 4 has a tetragonal zircon-type structure, and this material is frequently grouped together with the rare-earth orthophosphates (particularly those in the second half of the transition series) as well as tetragonal YPO 4 . The orthophosphates in the first half of the rare-earth transition series have the monoclinic monazite structure and have been considered as a host ceramic material for radioactive waste storage [1].…”

Section: Introductionmentioning

confidence: 99%

“…The unit cell of the ScPO 4 zircon structure consists of four formula units, where each phosphorus atom is bonded to four nearby oxygen atoms, and each of the Sc atoms is surrounded by eight oxygen atoms [2]. The self-trapped exciton (STE) in ScPO 4 was initially described by Trukhin and Boatner [3,4]. It exhibits a luminescence band in the UV range situated at ∼210 nm (∼5.6-5.9 eV).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Ultraviolet luminescence of ScPO₄, AlPO₄and GaPO₄crystals

et al. 2013

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

The luminescence of self-trapped excitons (STEs) was previously observed and described for the case of tetragonal-symmetry ScPO4 single crystals. The subject band in this material is situated in the UV spectral range of ∼210 nm or ∼5.8 eV. In the present work, we are both expanding this earlier luminescence study and seeking to identify similar luminescence phenomena in other orthophosphate crystals, i.e., AlPO4 and GaPO4. These efforts have proven to be successful--in spite of the structural differences between these materials and ScPO4. Specifically we have found that for AlPO4 and GaPO4, in addition to an α-quartz-like STE, there is a UV luminescence band that is similar in position and decay properties to that of ScPO4 crystals. Potentially this represents an STE in AlPO4 and GaPO4 crystals that is analogous to the STE of ScPO4 and other orthophosphates. The decay kinetics of the UV luminescence of ScPO4 was studied over a wide temperature range from 8 to 300 K, and they exhibited some unusual decay characteristics when subjected to pulses from an F2 excimer laser (157 nm). These features could be ascribed to a triplet state of the STE that is split in a zero magnetic field. A fast decay of the STE was detected as well, and therefore, we conclude that, in addition to the slow luminescence corresponding to a transition from the triplet state, there are singlet-singlet transitions of the STE. Time-resolved spectra of the slow and fast decay exhibit a small shift (∼0.15 eV) indicating that the singlet-triplet splitting is small and the corresponding wavefunction of the STE is widely distributed over the atoms of the ScPO4 crystal where the STE is created.

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

Product

Browser Extension Assistant by scite Citation Statement Search Reference Check Visualizations Dashboards Explore Journals Explore Organizations Explore Funders Embedding Badge Embedding Citation Search Pricing

Resources

Blog Help & FAQ Accessibility Statement API Terms For Universities & Governments For Researchers For Publishers For Corporate, Pharma & Enterprise Author Marketing Become an Affiliate Get an organization trial or quote scite Data & Services

About

News & Press Careers Read our Paper Coverage

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

Copyright © 2024 scite LLC. All rights reserved.

Made with 💙 for researchers

Part of the Research Solutions Family.