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UID:DSC-20491
DTSTART;TZID=Europe/Berlin:20240213T130000
SEQUENCE:1707633328
TRANSP:OPAQUE
DTEND;TZID=Europe/Berlin:20240213T143000
URL:https://www.dresden-science-calendar.de/calendar/de/detail/20491
LOCATION:TUD\,    
SUMMARY:Ihara: NMR Study of the Low-Field Magnetic Structure in Cu₂(OH)
 ₃NO₃
CLASS:PUBLIC
DESCRIPTION:Speaker: Yoshihiko Ihara\nInstitute of Speaker: Hokkaido Univer
 sity\, Sapporo\, Japan\nTopics:\nPhysik\n Location:\n  Name: TUD (REC/C213
 )\n  Street:   \n  City:  \n  Phone: \n  Fax: \nDescription: <p><strong>Ab
 stract</strong></p>  <p>The Cu-based mineral rouaite has chemical composit
 ion Cu₂(OH)₃NO₃ and is composed of two-dimensional Cu layers separat
 ed by NO₃. On the magnetic Cu layer\, the two crystallographically disti
 nct Cu sites form ferromagnetic (Cu-A site) and antiferromagnetic (Cu-B si
 te) chains\, which are alternatively connected with weaker interactions [1
 ]. Two successive magnetic transitions were observed at TN1 ~ 8 K and T
 N2 ~ 4 K from heat capacity and magnetization measurements\, respective
 ly [2]. To pin down the magnetic structure in the low-field ground state\,
  we performed ¹H-NMR on a single-crystalline sample\, applying external m
 agnetic fields of ~0.7 T along three independent directions. From the spe
 ctral splitting observed in the magnetically ordered state\, we estimate t
 he strength and direction of internal fields at the H site. By comparing t
 he internal fields simulated from the proposed model structure\, the magne
 tic structure in the ground state is identified. In the presentation\, we 
 will discuss in detail how the hyperfine field at the H site was calculate
 d from the model structure.</p>  <p>[1] H. Kikuchi\, et al.\, J. Phys.: Co
 nf. Ser. <strong>969</strong>\, 012117 (2018).<br /> [2] L. Yuan\, et al.\
 , Phys. Rev. B <strong>106</strong>\, 085119 (2022).</p>  <p><strong>BigBl
 ueButton</strong>:  https://bbb.tu-dresden.de/rooms/dar-mbs-me8-gsc (htt
 ps://bbb.tu-dresden.de/rooms/dar-mbs-me8-gsc/join)</p>
DTSTAMP:20260818T003638Z
CREATED:20240131T063827Z
LAST-MODIFIED:20240211T063528Z
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