PVD, Physics

Assignment Help:
In order to deposit films of the alloy YBa2Cu3, the metals Y, Ba, and Cu are evaporated from three point
sources. The latter are situated at the corners of an equilateral triangle whose side is 20 cm. Directly above
the centroid of the source array, and parallel to it, lies a small substrate; the deposition system geometry is
effectively a tetrahedron, each side being 20 cm long.
a. If the Y source is heated to 1740 K to produce a vapor pressure of 10-3 torr, to what temperature must
the Cu source be heated to maintain film stoichiometry?
b. Rather than a point source, a surface source is used to evaporate Cu. How must the Cu source
temperature be changed to ensure deposit stoichiometry?
c. If the source configuration in part (a) is employed, what minimum O2 partial pressure is required to
deposit stoichiometric superconducting oxide YBa2Cu3O7 films by a reactive evaporation process?
The atomic weights are Y = 89, Cu = 63.5, Ba = 137, and O = 16.

Related Discussions:- PVD

Science, How comes the word physics?

How comes the word physics?

Can you differentiate between half and full wave plate, Can you differentia...

Can you differentiate between half wave plate and full wave plate?

Explain interference of light, When two waves of exactly similar frequency ...

When two waves of exactly similar frequency (coming from two coherent sources) travels in a medium, in the similar direction simultaneously then because of their superposition, at

consevation of angular momentum , It states that angular momentum of a sys...

It states that angular momentum of a system remains conserved if no net torque is acting on the system.

Evaluates in applying the biot-savart law, In calculating the integral that...

In calculating the integral that one evaluates in applying the Biot-Savart Law one is Answer: The Biot-Savart Law itself written in discrepancy form gives the infinitesimal

What is colour of the shortest wavelength observable light, Question: ...

Question: What is the colour of the shortest wavelength observable light? Answer: Keeping in mind the actuality that the higher the frequency the shorter the waveleng

What is Neural coding? Explain Neural coding, Neural coding is a neuroscien...

Neural coding is a neuroscience based field mainly concerned with characterizing the relationship b/w the stimulus & the individual and ensemble neuronal responses or the relations

SCALER AND VECTOR, A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT...

A FORCE OF 10I-3J+6K NEWTON ACTS ON A BODY OF 5KG AND IT DISPLACESFROM 6I+5J-3KMETRE TO 10I-2J+7K METRE. THE WORK DONE IS A)100J B)O C)121J D)NONE

Si unit of force, UNIT: SI unit of force is Newton (N).

UNIT: SI unit of force is Newton (N).

Units and dimensions, The displacement of body in particular second is give...

The displacement of body in particular second is given by the equation Sn=u+a (2n-1)÷2, u is speed and a is acceleration. Dimensions of Sn are?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd