Influence Of CoO Research Articles

Polarizing influence of power distance on country of origin effect

PurposeCountry of origin (COO) effect refers to the influence of COO on consumers' perception and evaluation of a product. This research explores the impact of consumers' power distance on COO effect.Design/methodology/approachWe conducted two experiments to test the relevant hypotheses.FindingsThe results indicate that power distance has a polarizing influence on COO effect. That means, for products from countries with good images, the higher the consumers' power distance, the better their evaluation of the products; while for products from countries with poor images, the higher the power distance, the worse their evaluation of the products. The research also finds the moderating effect of consumers' competence–related country-related affect (CRA). When holding positive competence–related CRA, for products from countries with good images, the higher the consumers' power distance, the better their evaluation of the products; for products from countries with poor images, consumers' power distance has no effect. When having negative competence–related CRA, for products from countries with poor images, the higher the consumers' power distance, the worse their evaluation of the products; for products from countries with good images, power distance has no effect.Originality/valueThis study finds that depending on the perception of COO image, power distance not only improves the evaluation of products but also lows such evaluation, reflecting a two-way polarizing feature.

Copper Vanadate Nanobelts as Anodes for Photoelectrochemical Water Splitting: Influence of CoOx Overlayers on Functional Performances.

The design and development of environmentally friendly and robust anodes for photoelectrochemical (PEC) water splitting plays a critical role for the efficient conversion of radiant energy into hydrogen fuel. In this regard, quasi-1D copper vanadates (CuV2O6) were grown on conductive substrates by a hydrothermal procedure and processed for use as anodes in PEC cells, with particular attention on the role exerted by cobalt oxide (CoOx) overlayers deposited by radio frequency (RF) sputtering. The target materials were characterized in detail by a multitechnique approach with the aim at elucidating the interplay between their structure, composition, morphology, and the resulting activity as photoanodes. Functional tests were performed by standard electrochemical techniques like linear sweep voltammetry, impedance spectroscopy, and by the less conventional intensity modulated photocurrent spectroscopy, yielding an important insight into the material PEC properties. The obtained results highlight that, despite the fact that the supposedly favorable band alignment between CuV2O6 and Co3O4 did not yield a net current density increase, cobalt oxide-functionalized anodes afforded a remarkable durability enhancement, an important prerequisite for their eventual real-world applications. The concurrent phenomena accounting for the observed behavior are presented and discussed in relation to material physico-chemical properties.

Humidity sensing performance of mesoporous CoO(OH) synthesized via one-pot hydrothermal method

A humidity-responsive material of mesoporous CoO(OH) was synthesized successfully via one-pot hydrothermal method and the influence of CoO(OH) precursor concentration on humidity sensitive performance was studied. The structure and morphology of mesoprous CoO(OH) was characterized by X-ray Diffraction, Infrared spectra, Nitrogen adsorption and desorption, Scanning electron microscope, Transmission electron microscope and so on. The optimized mesoporous CoO(OH) based sensor showed the best linearity and high humidity sensitivity over a wide range of the humidity range (11–95% RH). Its impedance changed nearly four orders of magnitude and the response time was about 1.6 s. Humidity sensing mechanism was discussed in detail.

Country of Origin Effect and Animosity on The Attitude and Purchase Intention of Foreign Products

The purpose of this study is to examine COO effect and Animosity on the attitude and purchase intention of foreign products in ethnic subculture within a country. This research is tested in Malay and Chinese ethnic subculture in West Kalimantan, Indonesia. The categories of product are foods from Malaysia. Sample in this study is 435 respondents, consists of 218 Malay respondents from Ma-lay and 217 Chinese respondents. The collection of data was using non probability sampling method by combining accidental and snowball sampling. Data analysis uses structural equation modeling (SEM) Multi-group.The results show that, there is a positive influence of COO on attitudes of foreign products for both Malay and Chinese ethnic. This study also show that, the influence of COO on the purchase intentions of foreign products can only be proven in Chinese ethnic. Furthermore, the results show that animosity have a negative influence on attitude toward foreign products. In addition, attitude also have a positive influence on the intention to purchase. However, this study fails to prove the influence of animosity on the intention to purchase of foreign products. These results indicate that there are differences in consumer behavior between Malay and Chinese ethnic in the evaluation of foreign products.

Influence of CoO on stability of nonlinear electrical properties and dielectric characteristics in Pr 6O 11-based ZnO varistor ceramics

The nonlinear electrical properties, dielectric characteristics, and stability of the varistor ceramics of Zn–Pr–Co–Cr–Dy oxide system were investigated at various CoO contents. The sintered density of varistor ceramics increased from 5.25 to 5.55 g cm −3 with increasing CoO contents. The varistor voltage decreased from 235.3 to 86.0 V mm −1 with increasing CoO contents. As the CoO content increased, the nonlinear exponent increased up to 1.0 mol.% CoO, whereas further incorporation decreased the nonlinear exponent. Varistor ceramics containing 1.0 mol.% CoO exhibited the highest nonlinearity, in which the nonlinear exponent was 66.6 and the leakage current was 1.2 μA. Furthermore, varistor ceramics containing 1.0 mol.% CoO exhibited the highest stability, where the variation rate of varistor voltage, nonlinear exponent, and leakage current were −1.9%, −10.9%, and +275%, respectively, under DC accelerated aging stress of 0.95 V 1 mA /150 °C/24 h.

Influence of CoO and Al 2O 3 on the phase partitioning of ZrO 2-3 mol% Y 2O 3

Tetragonal zirconia polycrystal doped with 1.5 wt% CoO and 1.5 wt% Al 2O 3 showed large and faceted CoAl 2O 4 spinel grains existing in clusters and large monoclinic zirconia grains. Major stages of microstructural evolution during sintering included (1) formation of spinel as a result of preferred segregation of CoO to Al 2O 3 phase, (2) exudation of liquid phase to grain junctions among faceted spinel grains and zirconia grains, and (3) growth of spinel grains and the zirconia grains adjacent to the spinel phase.

Magnetic Properties and Structure for Compositionally Modulated Co¿CoOx Films

To clarify the influence of CoO spins on the magnetic properties of Co-CoO reactive-sputtered films, Co-CoOx compositionally modulated (CM) films were investigated. These Co-CoOx CM films were prepared by modulating the oxygen partial pressure (Po2) in the vacuum chamber. These films have Co-CoO interfaces parallel to the film plane. The coercivity (Hc) and in-plane anisotropy (KH) of CM films with short modulation periods increased remarkably below the Neel temperature of CoO (= 292 K). These increases in Hc and KH at low temperatures are thought to originate in a magnetic interaction between the Co spins and CoO spins.