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Pregled bibliografske jedinice broj: 491083

Časopis

Autori: Amara, Mehdi; Galera, Rose-Marie; Aviani, Ivica; Givord, Françoise.
Naslov: TbB6 antiferromagnetic state: a macroscopic and microscopic investigation
Izvornik: Physical Review B - Condensed Matter and Materials Physics (1098-0121) 82 (2010); 224411-1-224411-13
Vrsta rada: članak
Ključne riječi: antiferromagnetism; domains; displacement waves; rare-earth hexaborides; magnetostriction; Xray
Sažetak:
The antiferromagnetic state of TbB6 has been investigated by means of magnetic susceptibility, magnetostriction and X-ray diffraction measurements on a single crystal. The anisotropy of the magnetic susceptibility and the magnetostriction data point to a tetragonal symmetry in the antiferromagnetic state. Below TN, the X-ray diffraction investigation shows charge satellites, related to the <1/2 0 0> and h <1/2 1/2 0> wave vectors stars, similar to those observed in GdB6. The <1/2 0 0> satellites clearly result from the formation of static atomic displacements waves. The displacive phenomenon is described as a compromise between the exchange coupling and a single-ion elastic energy. This mechanism is shown to be responsible for the recurrence of the h <1/4 1/4 1/2> i magnetic wave vectors in rare-earth hexaborides. A combined analysis of experimental and theoretical data points to only two stable tetragonal models for TbB6 antiferromagnetic structure. This study confirms the influence of exchange displacements in rare-earth hexaborides and highlights the need for a systematic investigation of the magnetic anisotropy of antiferromagnets
Projekt / tema: 035-0352827-2841, 035-0352843-2849
Izvorni jezik: ENG
Rad je indeksiran u
bazama podataka:
Current Contents Connect (CCC)
Scopus
SCI-EXP, SSCI i/ili A&HCI
Kategorija: Znanstveni
Znanstvena područja:
Fizika
URL Internet adrese: http://prb.aps.org/abstract/PRB/v82/i22/e224411
Broj citata:
Altmetric:
DOI: 10.1103/PhysRevB.82.224411
URL cjelovitog teksta:
Google Scholar: TbB6 antiferromagnetic state: a macroscopic and microscopic investigation
Upisao u CROSBI: iaviani@ifs.hr (iaviani@ifs.hr), 13. Stu. 2010. u 15:17 sati



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