MBE is an advanced ultra-high vacuum technique utilized for the deposition of epitaxial layers with exceptional uniformity, precise control over layer thickness at the atomic scale, and the creation of heterostructures with sharp interfaces. This technique has been widely employed as a pivotal tool in fundamental research, spanning over four decades, and has significantly contributed to the exploration of novel physics phenomena and the development of electronic devices.
Operating under stringent ultra-high vacuum conditions and with meticulous temperature control, MBE directs a precisely regulated beam of atoms from elemental sources towards a substrate. Concurrently, the surface kinetics of the substrate is adjusted by precisely controlling its temperature. Real-time monitoring of the growth process is achieved through the application of in-situ reflective high-energy electron diffraction (RHEED). By employing high-precision control over individual sources and maintaining highly stabilized fluxes, the growth rate can be accurately controlled at the atomic layer level.
MBE system, manufactured by Vinci technology, France, has been successfully installed at CRF, IIT Delhi, Sonipat campus. The MBE comprises three chambers: a Load lock chamber, a Storage chamber, and a deposition chamber. The deposition chamber is equipped with eight effusion cells, a 3-pocket electron-beam evaporator, and two cracker cells dedicated to Selenium and Tellurium. The MBE chamber operates at a base pressure in the low 10-11 mbar range. Throughout the growth process, reflection high-energy electron diffraction (RHEED) is employed to monitor the layer-by-layer growth. The substrate holder employed in this can accommodate substrates with a diameter of up to 2 inches.
1. Registration process (One Time): New Registration for external users.User Verification: Upload photo of Front side and back side of valid Identity card issued by the organization (only .jpeg format, file Size less than 1 Mb, height less than 1000 pixels, width less than 800 pixels). Undertaking: Download the undertaking template ( Download Link ). Duly filled, signed and stamped form should be uploaded in .pdf format. Confirmation: An email will be sent to the user after verification of the documents.
2.Before planning to avail the Instrument facility of CRF IIT Delhi: user must visit https://crf.iitd.ac.in -> Facility -> select the desired facility from left side navigation list. Read carefully all the relevant information such as required sample type, testing charges and instrument location. Be prepared with details of the samples.
3.Log in and Click on Booking Appointment Tab: All the information relevant to testing must be filled in instrument booking form. In case user does not provide the required information the booking is liable to be rejected. User can upload the relevant existing data of their samples that might help in the measurements.
4.Sample submission & Payment Process: Once the application is submitted, the in-charge will verify the details and approve the request.External users must wait for the approval before making the payment and submitting the samples to concerned lab. After approval the payment should be made by the user. The payment transaction details need to be submitted online before appointment date time.
5.CRF Users can pay amount online using following details:
Beneficiary/Customer's Name: IRD ACCOUNT IITD
Bank Account Number: 10773572600
Bank Name: State Bank of India Branch Name: IIT Branch
Branch Code: 01077
NEFT IFSC CODE / RTGS: SBIN0001077
please write "CRF _Instrument Name" in the Remarks section while paying. Save the receipt file and upload in the crfbooking system online against your application.Payment can also made in form of demand draft in favour of " IRD ACCOUNT IITD " Payable at New Delhi.6.IIT Delhi
GST Number : 07AAATI0393L1ZI
PAN Number : AAATI0393L
1 Registration process (One Time): New Registration for internal users.
Fill in all the details in Personal Information, Supervisor Information and User Login Credentionals.
Once submitted, an email to supervisor is sent for activation of account. Once activated by supervisor, you can do the instrument bookings.
2 Before planning to avail the Instrument facility of CRF IIT Delhi: user must visit https://crf.iitd.ac.in > Facilities > select the desired facility from left side navigation list. Read ca 
refully all the relevant information such as required sample type, testing charges and instrument location. Be prepared with details of the samples.
3. Log in on CRF Booking System and Click on Booking Appointment Tab: All the information relevant to testing must be filled in instrument booking form. In case user does not provide the required information the booking is liable to be rejected. User can upload the relevant existing data of their samples that might help in the measurements.
4 Sample submission & Payment Process: Once the application is submitted, the in-charge will verify the details and approve the request.
