“Daniel has risen from the dead”

Bryan, Victoria M.

doi:10.4324/9781315306711-2

Cited by 1 publication

(2 citation statements)

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“…Let's search the value of magnetic moment of the Co ion in TiO 2 /Co that was reported the last five years. The minimal value of 0.0015  B /Co was recently reported for a sol-gel sample by J. Daniel Bryan [5]. Hong et al [6] reported a magnetic moment of 0.16  B /Co for TiO 2 thin film deposited onto Si substrate by laser deposition.…”

Section: Introductionmentioning

confidence: 84%

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CO CLUSTER FORMATION IN TiO2 DMS AND A METHOD OF ESTIMATION

Hong

Thuan

Dai

et al. 2017

AJSTD

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The paper presents experimental observations of the Co cluster formation in TiO2/Co powder samples prepared by the Sol-Gel method. The obtained X-ray diffraction patterns and Raman scattering show that the anatase phase of TiO2 was successfully synthesized at an annealing temperature of 450°C. Comprehensive studies by means of X-ray diffraction, Raman scattering, thermal magnetization in a temperature range of 300–1000 K and magnetic hysteresis at room temperature confirm that a part of Co did not substitute for Ti in TiO2 structure, otherwise it has reasonably formed cluster of Co in samples. Based on the thermal magnetization curves a method to estimate the magnetic moment per one Co ion substituted for Ti in TiO2 structure was proposed. By means of this method the volume of Co substituted for Ti has been estimated for samples annealed at various temperatures around 450°C. The obtained results show that the volume of Co cluster rises when the annealing temperature increases. This obtained result persuasively explains the large divergence in the magnetic moment per one Co ion reported in the most published papers.

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Section: Introductionmentioning

confidence: 84%

“…Most of papers reported a magnetic moment around 1.2  B /Co [7]. Some authors reported a high value of about 1.7  B /Co [8] and 1.92  B /Co [5]. Therefore it implies the following questions: Why the obtained magnetic moment values per the Co in TiO 2 /Co DMS are in large divergence.…”

Section: Introductionmentioning

confidence: 99%