Cucl2 assisted cubic to hexagonal phase transformation of cadmium sulphide

Patil, L.A.; Wani, P. A.; Amalnerkar, Dinesh

doi:10.1016/s0254-0584(99)00124-8

Cited by 20 publications

(10 citation statements)

References 8 publications

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“…The thixotropic paste was screen printed on a glass substrate in desired patterns [39][40]. The films prepared were fired at 550 • C for 24 h. These films were surface modified by dipping them into a 0.01 M aqueous solution of cupric chloride for different intervals of time and were dried at 80 • C followed by firing at 550 • C for 24 h in air ambient.…”

Section: Thick Film Preparationmentioning

confidence: 99%

Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature

Patil¹,

Patil²

2006

Sensors and Actuators B: Chemical

175

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Section: Thick Film Preparationmentioning

confidence: 99%

Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature

Patil¹,

Patil²

2006

Sensors and Actuators B: Chemical

175

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“…This mixture was ball milled for 2 h to get homogeneous powder and was then sintered at 1000 • C for 3 h in a muffle furnace. Thick films of pure and RuO 2 -doped SnO 2 were prepared by screen printing technique [29,30] onto alumina substrates in the desired pattern. The surface-ruthenated (surface customized using RuO 2 ) SnO 2 films were obtained by dipping pure SnO 2 thick films into an aqueous solution (0.01 M) of ruthenium chloride for different intervals of time such as 5, 15, 30, 45 and 60 min.…”

Section: Preparation Of Pure and Modified Sno 2 Based Gas Sensorsmentioning

confidence: 99%

Surface customization of SnO2 thick films using RuO2 as a surfactant for the LPG response

Wagh¹,

Jain²,

Patil³

et al. 2007

Sensors and Actuators B: Chemical

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“…Complete transformation is possible in certain cases on the addition of a definite concentration of the magnetic or nonmagnetic ions. 3 However, the latter stepwise transformation always leads to a mixture of two phases. The percentage of such mixed phases can be elucidated by methods such as powder X-ray diffraction through Debye function analysis (DFA), 6 the Short and Steward method, 7 simulation, 8 and by differential scanning calorimetry (DSC).…”

Section: Introductionmentioning

confidence: 99%

Switching on Antiferromagnetic Coupled Superparamagnetism by Annealing Ferromagnetic Mn/CdS Nanoparticles

et al. 2011

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Mixed phases of metastable cubic and stable hexagonal manganese assisted CdS nanoparticles were synthesized by a colloidal route. These phases were quantified by the Short and Steward method of X-ray diffraction and differential scanning calorimetry analysis. The photoluminescence (PL) emission observed around ∼550 nm for undoped CdS is found to be due to cadmium vacancy defects; on increased addition of Mn 2þ both the intensity and the line width of this emission continuously but disproportionately decrease and a new emission around ∼585 nm, interpreted to be due to manganese dÀd emission, emerges with increased intensity but with no change in line width. The disproportionate decrease in the area and bandwidth of the ∼550 nm emission reveals that the intensity decrease is not a manifestation of the line width change. This decrease in intensity, i.e., the transition probability, is attributed to both the quenching effect by manganese and reduction in Cd vacancy defects due to substitution by Mn 2þ . The enriched 5% Mn/CdS was subjected to annealing in order to find out any possible changes or transformation during the annealing proces. An increase in the electron paramagnetic resonance intensity of preannealed sample on lowering temperature, much more than suggested by the Boltzmann population difference, indicates it to be ferromagnetic. On the other hand, postannealed sample exhibits antiferromagnetic coupled superparamagnetism as revealed by a drastic reduction in intensity down to the N eel temperature (T N ) with unaltered line width and a substantial decrease in line width below T N . This conversion from ferromagnetism to antiferromagnetic coupled superparamagnetism after annealing is strongly supported by magnetic measurements, in which the preannealed sample exhibits increased coercivity on lowering the temperature, a case of ferromagnetism, and the postannealed material, however, exhibits low coercivity along with exchange bias below T N , representing superparamagnetism. This conversion is due to ionic migration of Mn 2þ as supported by magnetic and PL measurements. High-resolution transmission electron microscopy confirms the morphology and size of nanoparticles.

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Cucl2 assisted cubic to hexagonal phase transformation of cadmium sulphide

Cited by 20 publications

References 8 publications

Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature

Heterocontact type CuO-modified SnO2 sensor for the detection of a ppm level H2S gas at room temperature

Surface customization of SnO2 thick films using RuO2 as a surfactant for the LPG response

Switching on Antiferromagnetic Coupled Superparamagnetism by Annealing Ferromagnetic Mn/CdS Nanoparticles

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