VitiSynth Full Entry

Reference: Anomalous T-induced second order diffraction loss and magnetic transition in red-wine-doped highly oriented pyrolytic graphite at the magic angle
Key Statements


Presence of high temperature superconductivity in highly-oriented-pyrolytic-graphite (HOPG) and water-doped-graphite has recently attracted important attention. In the latter, analogy with red-wine-doped FeTe 1-x Sx superconductors has been proposed. We report a novel T-XRD investigation of red-wine-doped-HOPG at the magic angle (average theta misfit between the layers ~ 0.8 degrees as revealed by TEM and Moiré pattern analyses) from 77K to 673K. Anomalous T-induced depletion in the intensity of the 004 HOPG-reflection from 77K to 348K is demonstrated. Similar depletion features could be also found in comparative measurements performed in water doped HOPG samples. Significant deviation from the linear c-axis expansion predicted by the alpha-factor is shown together with a depletion in the graphitic c-axis shift-values for wine doped samples. EPR analyses are also provided and reveal a transition at 77K implying possible presence of a change in the magnetic ordering (i.e. ferromagnetism) at low temperature. VSM analyses supported further the T-XRD results, by revealing presence of magnetic transition at approx. 350K together with unusual superconductive-like hysteretic features at 250K and 300K which are not compatible with ferromagnetism.

(highlighting by VitiSynth)

Link to paper-

Partially indexed reference.

View Interactions

VitiSynth Review
Go Back


Publication Details

Published: 2019
Publication: Materials Research Express
Issue: 2019 Online September 2019
Author: Shuai G 2019


Related Video

None for this Entry

Related Audio

None for this Entry

Discuss this Entry

No related discussions available.

Join Discussion

Latest Discussions
Special Report

Date: 19th April 2020
Vine Synth:Growth stage:VS 4 Flowering:VS 4c Bud development:VS 4c.2 Differentiation of main axis of anlage into inflorescence rachis primordium or tendril primordium

The development of inflorescence primordia (IP) is clearly described i...Read more

Date: 16th February 2020
Admin Synth:Guides:Data standards:Colour codes

I think it would be very useful if we have standard colour codes for e...Read more

Date: 29th October 2015
Reference:Journal:Weed Technology:2015:Online October 2015:Devkota P 2015:Influence of Spray Solution Temperature and Holding Duration on Weed Control with Premixed Glyphosate and Dicamba Formulation

Pesticides in general are chemical products, therefore the quality of ...Read more

Testimonials.. Read more