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  39K and 77Se NMR study of the paraelectric-to-incommensurate phase transition of K2SeO4

Topič, B., von Kienlin, A., Gölzhäuser, A., Haeberlen, U., & Blinc, R. (1988). 39K and 77Se NMR study of the paraelectric-to-incommensurate phase transition of K2SeO4. Physical review. B, Condensed matter, 38(13), 8625-8632. doi:10.1103/physrevb.38.8625.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000A-6E6B-4 Version Permalink: https://hdl.handle.net/21.11116/0000-000A-6E6C-3
Genre: Journal Article

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PhysRevB_38_1988_8625.pdf (Any fulltext), 359KB
 
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https://journals.aps.org/prb/abstract/10.1103/PhysRevB.38.8625 (Any fulltext)
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 Creators:
Topič, B.1, Author           
von Kienlin, A.1, Author           
Gölzhäuser, A.2, Author           
Haeberlen, U.1, Author           
Blinc, R., Author
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1Department of Molecular Physics, Max Planck Institute for Medical Research, Max Planck Society, ou_1497705              
2Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              

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 Abstract: The 39K quadrupole-coupling and chemical-shift tensors have been determined from the angular dependences of the 39K line shifts of the 39K±(1/2⇆∓ 1) / 2 central NMR transitions in the paraelectric (P) and incommensurate (I) phases of K2SeO4. The main effect of the P-I phase transition on these tensors is the appearance of nonzero off-diagonal elements Vab and Vbc which reflects the destruction of mirror planes by frozen-in soft-mode displacements along the b axis. From the angular dependences of the 77Se line shifts the 77Se chemical-shift tensor has been determined in the paraelectric phase of K2SeO4. In contrast to the 39K quadrupole-coupling and chemical-shift tensors it remains unaffected on going through TI and changes only slightly at TC.

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Language(s): eng - English
 Dates: 1988-04-261988-11-01
 Publication Status: Issued
 Pages: 8
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 Rev. Type: Peer
 Identifiers: DOI: 10.1103/physrevb.38.8625
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Title: Physical review. B, Condensed matter
Source Genre: Journal
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Publ. Info: Ridge, NY : American Physical Society
Pages: - Volume / Issue: 38 (13) Sequence Number: - Start / End Page: 8625 - 8632 Identifier: ISSN: 0163-1829